Product Image

Thyroid Support Complex

Pure Encapsulations
4.7
★ ★ ★ ★ ★
(175 ratings)
Iodine 150 mcg
Selenium 200 mcg
Zinc 20 mg
Tyrosine 500 mg
Ashwagandha 400 mg
Turmeric 100 mg
Product Image
Score72
A transparent thyroid-support blend with iodine, selenium, zinc, tyrosine, and several standardized botanicals. Its interaction potential and modest herb doses call for targeted, professionally reviewed use.
How scoring works
Quantity:120 Capsule(s) • (60 servings)
Goals:
Metabolism Boost
Testosterone Support
Energy
Hair Health
Anti-Aging
Mood Support
General Health
Immunity

Score 72

A transparent thyroid-support blend with iodine, selenium, zinc, tyrosine, and several standardized botanicals. Its interaction potential and modest herb doses call for targeted, professionally reviewed use.
How scoring works
$66.50($1.10 per serving)
Pure Formulas
$ 66.50
Vitacost
$ 66.50
iHerb
$ 66.50
Report prices

Analysis

Iodine, selenium, zinc, and 500 mg tyrosine directly support normal thyroid hormone production and metabolism. Vitamin C, vitamin A, and vitamin D provide broader nutritional coverage, though vitamin D is modest.

Ashwagandha, forskolin, guggul, and turmeric broaden the formula toward stress and metabolic support. Standardized markers are identified, but the turmeric and ashwagandha amounts are relatively modest for stand-alone goals.

Two capsules are convenient, yet the formula is too active to treat like a general multivitamin. It best fits adults whose thyroid status and medicine use have been reviewed before adding iodine and multiple thyroid-active botanicals.

Who is it for
  • Adults seeking a comprehensive thyroid-nutrient formula
  • Users whose thyroid status is monitored
  • People wanting iodine, selenium, and tyrosine together
Best for
  • Supporting normal thyroid nutrient intake
  • Energy and metabolism support when intake is inadequate
  • Users needing a transparent multi-ingredient formula

Pros

  • Useful iodine and selenium forms
  • Provides 500 mg tyrosine
  • Includes standardized ashwagandha and forskolin
  • Two-capsule serving

Cons

  • Turmeric amount is low
  • Ashwagandha is modestly dosed
  • Vitamin D contribution is small
  • High interaction burden

Warnings

  • Iodine can worsen some thyroid conditions or conflict with thyroid-medicine dosing, so thyroid status should be reviewed first.
  • Ashwagandha and guggul may alter thyroid hormone activity and should not be combined casually with thyroid medicine.
  • Forskolin can lower blood pressure and may add to bleeding risk with anticoagulant medicines.
  • Vitamin A acetate is preformed vitamin A and requires attention during pregnancy and with liver conditions.

Nutrient quality

77 High impact

Potassium iodide, zinc citrate, selenomethionine, and vitamin D3 are favorable forms. Tyrosine and ashwagandha are meaningfully dosed, while vitamin D and turmeric provide less depth.

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Ingredient transparency

82 Highest impact

Every listed active has a specific amount. Serving count is available, but complete daily intake guidance is not supplied.

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Customer satisfaction

68 High impact

The aggregate rating is strong and supported by moderate rating volume. No specific feedback was supplied to judge repeated complaints or fit with the intended use.

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Value for money

57 Moderate impact

Good mineral forms and meaningful core actives partly support the premium price. The serving cost is high, especially because several botanical potencies remain uncertain.

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Report analysis

Goals

Metabolism Boost
Metabolism Boost
Impact
High effect
B Goal FitB+ Strength of SupportB CoverageB+ Formula Quality
Vitamin D · 5 mcgZinc · 20 mg

Iodine, selenium, tyrosine, zinc, and ashwagandha form a focused thyroid-support system that may help normal metabolic rate when thyroid nutrition or stress is limiting. The formula does not rely on stimulants and instead targets hormone synthesis, activation, and related support.

The core nutrients and tyrosine reach meaningful amounts, while ashwagandha standardization is incomplete. Iodine, tyrosine, and ashwagandha may alter thyroid status, so people with thyroid disease or thyroid medication should use the formula only with appropriate clinical guidance.

Study evidence
Iodine Mixed 17 studies
Selenium Mixed 28 studies
Zinc Supportive 12 studies
Testosterone Support
Testosterone Support
Impact
High effect
B+ Goal FitB Strength of SupportB CoverageB Formula Quality
Zinc · 20 mgVitamin D · 5 mcgAshwagandha · 400 mg

Ashwagandha and zinc provide meaningful stress-modulating and steroidogenesis support. Their amounts are well aligned with common supplemental use, and selenium adds a supportive trace mineral.

The ashwagandha plant part and standardization are unclear, which prevents comparison with better-studied extracts. Vitamin D is very low, so foundational pathway coverage is incomplete.

Study evidence
Ashwagandha Supportive 17 studies
Selenium No effect 16 studies
Vitamin D Supportive 56 studies
Zinc Disputed 7 studies
Energy
Energy
Impact
High effect
B Goal FitB+ Strength of SupportB CoverageB- Formula Quality
Iodine · 150 mcgVitamin D · 5 mcg

Tyrosine and ashwagandha provide complementary support for neurotransmitter production and stress resilience. Their disclosed amounts are substantial enough to make the energy rationale credible.

The formula lacks B vitamins, magnesium, caffeine, or a direct mitochondrial active, so pathway coverage remains incomplete. Iodine and guggul may alter thyroid activity, so people using thyroid hormone should seek clinician guidance before use.

Study evidence
Ashwagandha Supportive 9 studies
Iodine Adverse 3 studies
Hair Health
Hair Health
Impact
High effect
B- Goal FitB Strength of SupportB- CoverageB+ Formula Quality
Vitamin D · 5 mcgZinc · 20 mgVitamin C · 150 mg

Iodine, selenium, zinc, tyrosine, and ashwagandha form a broad thyroid-support system that may help hair when thyroid-related nutrition or stress is a factor. Vitamin C and vitamin D add antioxidant and deficiency-related context.

The product lacks iron, biotin, silicon, and structural amino acids, so it does not cover several common hair pathways. Ashwagandha standardization and plant-part details are incomplete despite a substantial extract amount.

Study evidence
Ashwagandha Supportive 2 studies
Iodine No effect 1 study
Selenium Disputed 7 studies
Vitamin C Mixed 5 studies
Vitamin D Disputed 34 studies
Zinc Supportive 22 studies
Anti-Aging
Anti-Aging
Impact
High effect
C Goal FitB Strength of SupportB- CoverageB+ Formula Quality
Vitamin D · 5 mcg

Ashwagandha, selenium, zinc, turmeric, and tyrosine cover stress, antioxidant, and thyroid-related metabolic pathways. The ashwagandha amount is substantial and selenium uses an absorbable organic form.

Vitamin D is low, while turmeric, forskohlii, and several botanicals lack clear active-marker quantities. Iodine, ashwagandha, and guggul can affect thyroid function, so thyroid disorders or thyroid medicines warrant clinician-guided use.

Study evidence
Ashwagandha No effect 1 study
Selenium Supportive 27 studies
Vitamin D Supportive 50 studies
Zinc Supportive 10 studies
Mood Support
Mood Support
Impact
High effect
B Goal FitC+ Strength of SupportB- CoverageB- Formula Quality
Vitamin D · 5 mcgAshwagandha · 400 mg

Ashwagandha directly supports the stress-response pathway, while tyrosine supplies a neurotransmitter precursor. Turmeric adds a separate inflammatory pathway that may support brain health.

The ashwagandha amount is useful, but its plant part and withanolide percentage are not disclosed. Iodine, ashwagandha, guggul, and forskolin may alter thyroid activity, so people with thyroid disease or thyroid-medication use need clinician-guided monitoring.

Study evidence
Ashwagandha Supportive 29 studies

Ingredients

IngredientAmount per serving
Vitamin A (Vitamin A Acetate)
 750 mcg
Vitamin C (Ascorbic Acid)
 150 mg
Vitamin D (Cholecalciferol, Vitamin D3)
 5 mcg
Iodine (Potassium Iodide)
 150 mcg
Zinc (Zinc Citrate)
 20 mg
Selenium (Selenomethionine)
 200 mcg
L-Tyrosine
500 mg
Ashwagandha (Withania somnifera) extract (Withanolides)
 400 mg
Forskohlii (Coleus forskohlii) extract (Forskolin)
 100 mg
Guggul (Commiphora mukul) extract (Guggulsterones)
 150 mg
Turmeric (Curcuma longa) extract (Curcuminoids)
 100 mg
Gluten Free Adults 18–50
Report overview
Iodine (Potassium Iodide) · 150 mcg OverallScore87
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyF Value

Potassium iodide supplies an appropriate daily amount in a readily absorbed form. Selenium and L-tyrosine add relevant cofactors, while the botanical blend makes the formula broader than straightforward iodine support. The high serving cost limits value despite those added ingredients.

View ingredientView products
Selenium (Selenomethionine) · 200 mcg OverallScore77
A- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyF Value

Selenomethionine is a highly bioavailable organic form, but the label does not identify the active isomer. The 200 mcg serving matches the standard targeted amount and retains a useful dietary safety buffer. The serving is expensive for selenium-focused use because much of its cost supports other ingredients.

View ingredientView products
Zinc (Zinc Citrate) · 20 mg OverallScore73
B+ Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyF Value
+8

Zinc Citrate provides an effective organic salt. The dose fits daily maintenance, with a low zinc-to-copper imbalance risk. The serving cost is high for the zinc delivered.

View ingredientView products
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<p>Its label clearly provides 2 mg of Vitamin B6 as Pyridoxine Hydrochloride, making it a more clearly defined zinc and iodine and ashwagandha option. Compared with the original, its ingredient and goal alignment is stronger, although it does not retain the original product’s selenium and turmeric and tyrosine coverage.</p>
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<p>Its label clearly provides 2 mg of Vitamin B6 as Pyridoxine Hydrochloride, making it a more clearly defined zinc and iodine and ashwagandha option. Compared with the original, its ingredient and goal alignment is stronger, although it does not retain the original product’s selenium and turmeric and tyrosine coverage.</p>
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<p>Its label clearly provides 500 mcg of Lycopene, making it a more clearly defined selenium and iodine option. Compared with the original, its ingredient and goal alignment is stronger, although it does not retain the original product’s zinc and turmeric and ashwagandha and tyrosine coverage.</p>
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Thyrocsin

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<p>Its label clearly provides 5 mg of Zinc as Albion Zinc Bisglycinate Chelate, preserving relevant selenium and iodine and ashwagandha and tyrosine coverage. Compared with the original, it lowers the serving cost, although it does not retain the original product’s zinc and turmeric coverage.</p>
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Essential Thyroid Nutrition

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<p>Its label clearly provides 150mcg RAE of Vitamin A as Retinyl Palmitate, preserving relevant iodine and ashwagandha and tyrosine coverage. Compared with the original, it lowers the serving cost, although it does not retain the original product’s zinc and selenium and turmeric coverage.</p>
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Alive! Men's Gummy Multivitamin Delicious Fruit Flavored

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<p>Its label clearly provides 900 mcg of Vitamin A as Retinyl Palmitate, preserving relevant selenium and iodine coverage. Compared with the original, it lowers the serving cost, although it does not retain the original product’s zinc and turmeric and ashwagandha and tyrosine coverage.</p>
81 Value

Thyroid Energy

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<p>Its label clearly provides 2 mg of Vitamin B6 as Pyridoxine Hydrochloride, keeping the formula relevant to zinc and iodine and ashwagandha. Compared with the original, the lower serving cost and ingredient detail create a useful quality-to-cost balance, although it does not retain the original product’s selenium and turmeric and tyrosine coverage.</p>
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Life Extension
<p>Its label clearly provides 300mcg RAE of Vitamin A as Retinyl Palmitate, keeping the formula relevant to iodine and ashwagandha and tyrosine. Compared with the original, the lower serving cost and ingredient detail create a useful quality-to-cost balance, although it does not retain the original product’s zinc and selenium and turmeric coverage.</p>
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Alive! Men's Gummy Multivitamin

Nature's Way
<p>Its label clearly provides 900 mcg of Vitamin A as Retinyl Palmitate, keeping the formula relevant to selenium and iodine. Compared with the original, the lower serving cost and ingredient detail create a useful quality-to-cost balance, although it does not retain the original product’s zinc and turmeric and ashwagandha and tyrosine coverage.</p>
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults.
    Chandrasekhar K; Kapoor J; Anishetty S · Indian journal of psychological medicine · 2013
    Randomized trial64 participantsStress Relief Mood Support forAshwagandha
  2. Dual impact of Ashwagandha: Significant cortisol reduction but no effects on perceived stress - A systematic review and meta-analysis.
    Albalawi AA · Nutrition and health · 2025
    Meta-analysis488 participants13 studies pooledStress Relief forAshwagandha
  3. The effect of curcumin and zinc co-supplementation on glycemic parameters in overweight or obese prediabetic subjects: A phase 2 randomized, placebo-controlled trial with a multi-arm, parallel-group design.
    Karandish M; Mozaffari-Khosravi H; Mohammadi SM; Cheraghian B; Azhdari M · Phytotherapy research : PTR · 2021
    Randomized trial84 participantsMetabolism Boost forZinc
  4. Antioxidant role of zinc in diabetes mellitus.
    Cruz KJ; de Oliveira AR; Marreiro Ddo N · World journal of diabetes · 2015
    Narrative reviewMetabolism Boost forZinc
  5. The effects of selenium supplementation on cardiovascular risk factors in patients with metabolic diseases ‒ A systematic review and meta-analysis of randomized controlled trials.
    Qiu W; Huang N; Zhang K; Qiu H; Guo Z; Han F; Sun X; Hou N; Kan C · Nutricion hospitalaria · 2026
    Meta-analysis656 participants11 studies pooledMetabolism Boost forSelenium
  6. Iodine Supplementation Decreases Hypercholesterolemia in Iodine-Deficient, Overweight Women: A Randomized Controlled Trial.
    Herter-Aeberli I; Cherkaoui M; El Ansari N; Rohner R; Stinca S; Chabaa L; von Eckardstein A; Aboussad A; Zimmermann MB · The Journal of nutrition · 2015
    Randomized trial163 participantsMetabolism Boost forIodine
  7. U-Shaped Associations Between Urinary Iodine Concentration and the Prevalence of Metabolic Disorders: A Cross-Sectional Study.
    Jin M; Zhang Z; Li Y; Teng D; Shi X; Ba J; Chen B; Du J; He L; Lai X; Teng X; Li Y; Chi H; Liao E; Liu C; Liu L; Qin G; Qin Y; Quan H; Shi B; Sun H; Tang X; Tong N; Wang G; Zhang JA; Wang Y; Xue Y; Yan L; Yang J; Yang L; Yao Y; Ye Z; Zhang Q; Zhang L; Zhu J; Zhu M; Ning G; Mu Y; Zhao J; Teng W; Shan Z · Thyroid : official journal of the American Thyroid Association · 2021
    Cross-sectional study51,795 participantsMetabolism Boost forIodine
  8. A Randomized, Double-Blind, Placebo-Controlled, Crossover Study Examining the Hormonal and Vitality Effects of Ashwagandha ( Withania somnifera) in Aging, Overweight Males.
    Lopresti AL; Drummond PD; Smith SJ · American journal of men's health · 2020
    Randomized trial57 participantsAnti-Aging forAshwagandha
  9. Selenium Concentrations and Mortality among Community-Dwelling Older Adults: Results from IlSIRENTE Study.
    Giovannini S; Onder G; Lattanzio F; Bustacchini S; Di Stefano G; Moresi R; Russo A; Bernabei R; Landi F · The journal of nutrition, health & aging · 2019
    Cohort study347 participantsAnti-Aging forSelenium
  10. Selenium and mortality in the elderly: results from the EVA study.
    Akbaraly NT; Arnaud J; Hininger-Favier I; Gourlet V; Roussel AM; Berr C · Clinical chemistry · 2005
    Randomized trialAnti-Aging forSelenium
  11. Association of dietary selenium intake and all-cause mortality of Parkinson's disease and its interaction with blood cadmium level: a retrospective cohort study.
    Tu X; Wu N; Wan Y; Gan J; Liu Z; Song L · BMC geriatrics · 2024
    Cohort study184 participantsAnti-Aging forSelenium
  12. Selenium alleviates cadmium-induced biological aging acceleration and the potential mediating role of inflammation.
    Li C; Xiang Y; Liu M; Wang Z; Wu Y; Yang Q; Huang L · Ecotoxicology and environmental safety · 2025
    Cross-sectional study7,433 participantsAnti-Aging forSelenium
  13. Minerals and Sarcopenia; The Role of Calcium, Iron, Magnesium, Phosphorus, Potassium, Selenium, Sodium, and Zinc on Muscle Mass, Muscle Strength, and Physical Performance in Older Adults: A Systematic Review.
    van Dronkelaar C; van Velzen A; Abdelrazek M; van der Steen A; Weijs PJM; Tieland M · Journal of the American Medical Directors Association · 2019
    Systematic review10 studies pooledAnti-Aging forSelenium
  14. Joint association of serum 25-hydroxyvitamin D concentration and body mass index on the acceleration of clinical biomarker-based biological aging.
    Pan Z; Zeng J; Chen Z; Chen S; Yang J; Li H; Wang S; Wang J; Li N; Gong Y; Liu M; Li C · The journals of gerontology. Series A, Biological sciences and medical sciences · 2026
    Cohort study389,217 participantsAnti-Aging forVitamin D
  15. Serum 25-Hydroxyvitamin D Levels as an Aging Marker: Strong Associations With Age and All-Cause Mortality Independent From Telomere Length, Epigenetic Age Acceleration, and 8-Isoprostane Levels.
    Schöttker B; Hagen L; Zhang Y; Gào X; Holleczek B; Gao X; Brenner H · The journals of gerontology. Series A, Biological sciences and medical sciences · 2019
    Cohort study9,940 participantsAnti-Aging forVitamin D
  16. Sex-specific associations of serum 25-hydroxyvitamin D concentrations with incident sarcopenia in older adults: A 2-year follow-up study.
    Song S; Lim JY; Kim M; Won CW; Park HY · The journal of nutrition, health & aging · 2025
    Cohort study1,292 participantsAnti-Aging forVitamin D
  17. Vitamin D deficit is associated with accelerated brain aging in the general population.
    Terock J; Bonk S; Frenzel S; Wittfeld K; Garvert L; Hosten N; Nauck M; Völzke H; Van der Auwera S; Grabe HJ · Psychiatry research. Neuroimaging · 2022
    Cross-sectional study1,865 participantsAnti-Aging forVitamin D
  18. Vitamin D intake is associated with dementia risk in the Washington Heights-Inwood Columbia Aging Project (WHICAP).
    Zhao C; Tsapanou A; Manly J; Schupf N; Brickman AM; Gu Y · Alzheimer's & dementia : the journal of the Alzheimer's Association · 2021
    Cohort study1,759 participantsAnti-Aging forVitamin D
  19. The Association between Dietary Nutrient Intake and Acceleration of Aging: Evidence from NHANES.
    Ma J; Li P; Jiang Y; Yang X; Luo Y; Tao L; Guo X; Gao B · Nutrients · 2024
    Cross-sectional study4,692 participantsAnti-Aging forZinc
  20. The immune system and the impact of zinc during aging.
    Haase H; Rink L · Immunity & ageing : I & A · 2010
    Narrative reviewAnti-Aging forZinc
  21. Associations between serum trace elements and biological age acceleration in the Chinese elderly: A community-based study investigating the mediating role of inflammatory markers and the moderating effect of physical activity.
    Wang Y; Zhu W; Zhang T; Liu Q; Zou M; Xie Y; Wang M; Wang TS; Pang Y; Jing T; Zhang R · Journal of hazardous materials · 2025
    Observational studyAnti-Aging forZinc
  22. Bidirectional associations of zinc supplement intake with biological ageing interacted by metabolic equivalent of task: A large-scale population-based Biobank study.
    Zhou Y; Zhou J; Li Z; Wang J; Li H; Yin X; Gao J; Wu Y; Li J; Sun YX; Li Y; Wang W; Eser PO; Assimes TL; He J; Chen G · Clinical nutrition (Edinburgh, Scotland) · 2025
    Cross-sectional study68,947 participantsAnti-Aging forZinc
  23. Zinc, metallothioneins, longevity: effect of zinc supplementation on antioxidant response: a Zincage study.
    Mocchegiani E; Zincage Consortium · Rejuvenation research · 2008
    Narrative reviewAnti-Aging forZinc
  24. Acute and Repeated Ashwagandha Supplementation Improves Markers of Cognitive Function and Mood.
    Leonard M; Dickerson B; Estes L; Gonzalez DE; Jenkins V; Johnson S; Xing D; Yoo C; Ko J; Purpura M; Jäger R; Faries M; Kephart W; Sowinski R; Rasmussen CJ; Kreider RB · Nutrients · 2024
    Randomized trial59 participantsBrain Health Cognitive Support Energy forAshwagandha
  25. Effect of ashwagandha (Withania somnifera) extract with Sominone (Somin-On™) to improve memory in adults with mild cognitive impairment: A randomized, double-blind, placebo-controlled study.
    Rai HP; Mishra DN · Journal of psychopharmacology (Oxford, England) · 2025
    Randomized trial40 participantsBrain Health Cognitive Support forAshwagandha
  26. Efficacy of Withania somnifera supplementation on adult's cognition and mood.
    Remenapp A; Coyle K; Orange T; Lynch T; Hooper D; Hooper S; Conway K; Hausenblas HA · Journal of Ayurveda and integrative medicine · 2022
    Randomized trial60 participantsBrain Health Cognitive Support Productivity Boost forAshwagandha
  27. A clinical assessment of the therapeutic effects of Ashwagandha root extract on cognitive performance, sleep, and fatigue in children aged 6-12 years.
    Saxena A; Lopresti A; Sharif M; Elon N; Suri R; Langade DK · Frontiers in nutrition · 2026
    Randomized trial85 participantsBrain Health forAshwagandha
  28. Efficacy and Safety of Ashwagandha Root Extract on Cognitive Functions in Healthy, Stressed Adults: A Randomized, Double-Blind, Placebo-Controlled Study.
    Gopukumar K; Thanawala S; Somepalli V; Rao TSS; Thamatam VB; Chauhan S · Evidence-based complementary and alternative medicine : eCAM · 2022
    Randomized trial130 participantsBrain Health Sleep Support Stress Relief forAshwagandha
  29. Combined L-carnosine and L-tyrosine supplementation as an ergogenic strategy for physical and cognitive performance under fatigue in professional football players.
    Bilgin S; Bozyılan E; Buzdağlı Y; Karaç Öcal Y; Gürkan O; Toktaş S; İnan H; Egil İ; Yarayan YE · Frontiers in nutrition · 2026
    Randomized trial24 participantsBrain Health forTyrosine
  30. Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands--A review.
    Jongkees BJ; Hommel B; Kühn S; Colzato LS · Journal of psychiatric research · 2016
    Narrative reviewBrain Health forTyrosine
  31. Influence of nutritional tyrosine on cognition and functional connectivity in healthy old humans.
    Hensel C; Becker M; Düzel S; Demuth I; Norman K; Steinhagen-Thiessen E; Gallinat J; Lindenberger U; Kühn S · NeuroImage · 2019
    Cross-sectional study286 participantsBrain Health forTyrosine
  32. Dietary Tyrosine Intake (FFQ) Is Associated with Locus Coeruleus, Attention and Grey Matter Maintenance: An MRI Structural Study on 398 Healthy Individuals of the Berlin Aging Study-II.
    Plini ERG; Melnychuk MC; Harkin A; Dahl MJ; McAuslan M; Kühn S; Boyle RT; Whelan R; Andrews R; Düzel S; Drewelies J; Wagner GG; Lindenberger U; Norman K; Robertson IH; Dockree PM · The journal of nutrition, health & aging · 2023
    Cross-sectional study398 participantsBrain Health forTyrosine
  33. Baseline-dependent effect of dopamine's precursor L-tyrosine on working memory gating but not updating.
    Jongkees BJ · Cognitive, affective & behavioral neuroscience · 2021
    Randomized trial45 participantsBrain Health forTyrosine
  34. A standardized Ashwagandha root extract alleviates stress, anxiety, and improves quality of life in healthy adults by modulating stress hormones: Results from a randomized, double-blind, placebo-controlled study.
    Majeed M; Nagabhushanam K; Mundkur L · Medicine · 2023
    Randomized trial54 participantsCognitive Support forAshwagandha
  35. Efficacy and safety of ashwagandha root extract in children and adolescents with mild attention-deficit/hyperactivity disorder: a randomized, double-blind, placebo-controlled trial.
    Naik S; Muralidhar G; Rao BS; Agarwal S; Jain M · Journal of medicine and life · 2026
    Randomized trial58 participantsCognitive Support forAshwagandha
  36. Effects of multi-herb and ashwagandha root formulas on stress modulation: a randomized, double-blind, placebo-controlled clinical study.
    McKinney E; Stewart J; Kewalramani R; Singh S · Trials · 2026
    Randomized trial186 participantsEnergy Mood Support forAshwagandha
  37. Efficacy and Safety of Low-Dose Ashwagandha Supplementation on Exercise Endurance: A Randomized, Placebo-Controlled, Double-Blind, Clinical Trial.
    Prajapati H; Satia M; Shah D; Basera I; Shah T · Phytotherapy research : PTR · 2026
    Randomized trialEnergy forAshwagandha
  38. Enhancing healthspan with Ashwagandha (Withania somnifera): a comprehensive review of its multifaceted geroprotective benefits.
    Vittal M; Vinciguerra M · Biogerontology · 2025
    Narrative reviewEnergy forAshwagandha
  39. Safety and Efficacy of Ashwagandha Root Extract on Cognition, Energy and Mood Problems in Adults: Prospective, Randomized, Placebo-Controlled Study.
    Kale S; Lopresti A; Suri R; Garg N; Langade D · Journal of psychoactive drugs · 2026
    Randomized trial120 participantsEnergy Productivity Boost forAshwagandha
  40. Association of radioactive iodine treatment with survivorship symptoms and primary care utilisation in women of reproductive age with thyroid cancer: a retrospective cohort study.
    Devanarayan P; Hartman M; Partin M · Family medicine and community health · 2026
    Cohort study10,882 participantsEnergy forIodine
  41. Energy level and fatigue after surgery for thyroid cancer: A population-based study of patient-reported outcomes.
    Hughes DT; Reyes-Gastelum D; Kovatch KJ; Hamilton AS; Ward KC; Haymart MR · Surgery · 2020
    Cohort study2,584 participantsEnergy forIodine
  42. Health-Related Quality of Life in Differentiated Thyroid Cancer Survivors: A Cross-Sectional Study From Turkey.
    Gültekin A; Kahraman MY; Şengöz T; Şimşek FS · Head & neck · 2026
    Cross-sectional study202 participantsEnergy forIodine
  43. Effects of an Aqueous Extract of Withania somnifera on Strength Training Adaptations and Recovery: The STAR Trial.
    Ziegenfuss TN; Kedia AW; Sandrock JE; Raub BJ; Kerksick CM; Lopez HL · Nutrients · 2019
    Randomized trial38 participantsFitness forAshwagandha
  44. Efficacy of Ashwagandha (Withania somnifera [L.] Dunal) in improving cardiorespiratory endurance in healthy athletic adults.
    Choudhary B; Shetty A; Langade DG · Ayu · 2016
    Randomized trial50 participantsFitness General Health forAshwagandha
  45. Effects of Ashwagandha ( Withania somnifera) standardized root extract on physical endurance and VO 2max in healthy adults performing resistance training: An eight-week, prospective, randomized, double-blind, placebo-controlled study.
    Verma N; Gupta SK; Patil S; Tiwari S; Mishra AK · F1000Research · 2024
    Randomized trial80 participantsFitness General Health Muscle Gain forAshwagandha
  46. Effects of Withania somnifera (L.) Dunal (Ashwagandha) on cognitive and physical function in adults: a systematic review and meta-analysis.
    Zhu X; Zeng Q; Lei Y; Xu D · Frontiers in pharmacology · 2026
    Meta-analysis1,249 participants20 studies pooledFitness Muscle Gain Testosterone Support forAshwagandha
  47. Effects of eight-week supplementation of Ashwagandha on cardiorespiratory endurance in elite Indian cyclists.
    Shenoy S; Chaskar U; Sandhu JS; Paadhi MM · Journal of Ayurveda and integrative medicine · 2013
    Randomized trial40 participantsFitness forAshwagandha
  48. Effect of Calcifediol on Physical Performance and Muscle Strength Parameters: A Systematic Review and Meta-Analysis.
    Barbagallo M; Veronese N; Di Prazza A; Pollicino F; Carruba L; La Carrubba A; Dominguez LJ · Nutrients · 2022
    Meta-analysis5,446 participants7 studies pooledFitness Muscle Gain forVitamin D
  49. Effects of vitamin D supplementation on upper and lower body muscle strength levels in healthy individuals. A systematic review with meta-analysis.
    Tomlinson PB; Joseph C; Angioi M · Journal of science and medicine in sport · 2016
    Meta-analysis310 participants7 studies pooledFitness forVitamin D
  50. Influence of Sunlight and Oral D3 Supplementation on Serum 25(OH)D Concentration and Exercise Performance in Elite Soccer Players.
    Michalczyk MM; Gołaś A; Maszczyk A; Kaczka P; Zając A · Nutrients · 2021
    Randomized trial33 participantsFitness forVitamin D
  51. Effects of Vitamin D Supplementation in Elite Athletes: A Systematic Review.
    Wyatt PB; Reiter CR; Satalich JR; O'Neill CN; Edge C; Cyrus JW; O'Connell RS; Vap AR · Orthopaedic journal of sports medicine · 2024
    Systematic review482 participants14 studies pooledFitness forVitamin D
  52. Association between serum vitamin D levels and cardiorespiratory fitness in the adult population of the USA.
    Marawan A; Kurbanova N; Qayyum R · European journal of preventive cardiology · 2020
    Cross-sectional study1,995 participantsFitness forVitamin D
  53. Association between composite dietary antioxidant index and handgrip strength in American adults: Data from National Health and Nutrition Examination Survey (NHANES, 2011-2014).
    Wu D; Wang H; Wang W; Qing C; Zhang W; Gao X; Shi Y; Li Y; Zheng Z · Frontiers in nutrition · 2024
    Cross-sectional study6,019 participantsFitness Muscle Gain forZinc
  54. Serum essential elements and muscle health in Chinese adults: a community-based study.
    Ye H; Wang D; Liu S; Yao N; Gui Z; Huang Z; Zeng Y; Liu L; Wan H; Shen J · Nutrition & metabolism · 2025
    Cross-sectional study5,389 participantsFitness Muscle Gain forZinc
  55. [Survey of the dietary status and physical activity level and fitness of college freshmen in Chengdu].
    Han H; Lv X; Wang D · Wei sheng yan jiu = Journal of hygiene research · 2010
    Cross-sectional study1,200 participantsFitness forZinc
  56. A comprehensive review of the physiology and evidence base to guide the use of ergogenic and medical supplements for enhanced cycling performance.
    Rowland A; Edwards S; Prieto-Bellver G; Menz B; Rowland A; Cornelisse E; Karapetis CS; Wallen MP; Hopkins AM · Journal of the International Society of Sports Nutrition · 2026
    Narrative reviewFitness forZinc
  57. Minerals and Sarcopenia in Older Adults: An Updated Systematic Review.
    van Dronkelaar C; Fultinga M; Hummel M; Kruizenga H; Weijs PJM; Tieland M · Journal of the American Medical Directors Association · 2023
    Systematic review45 studies pooledFitness forZinc
  58. A randomized, double blind, placebo controlled study to evaluate the effects of ashwagandha (Withania somnifera) extract on sleep quality in healthy adults.
    Deshpande A; Irani N; Balkrishnan R; Benny IR · Sleep medicine · 2021
    Randomized trial150 participantsGeneral Health Sleep Support forAshwagandha
  59. Withania somnifera (L.) Dunal as Add-On Therapy for COPD Patients: A Randomized, Placebo-Controlled, Double-Blind Study.
    Singh P; Salman KA; Shameem M; Warsi MS · Frontiers in pharmacology · 2022
    Randomized trial150 participantsGeneral Health forAshwagandha
  60. Effect of Ashwagandha (Withania somnifera) extract on sleep: A systematic review and meta-analysis.
    Cheah KL; Norhayati MN; Husniati Yaacob L; Abdul Rahman R · PloS one · 2021
    Meta-analysis400 participants5 studies pooledGeneral Health Productivity Boost forAshwagandha
  61. Associations of selenium status with all-cause and cause-specific mortality: a systematic review and meta-analysis of cohort studies.
    Cui Z; Xie R; Lu X; Schomburg L; Brenner H; Schöttker B · Redox biology · 2025
    Meta-analysis95 participants20 studies pooledGeneral Health forSelenium
  62. Dietary Antioxidants, Circulating Antioxidant Concentrations, Total Antioxidant Capacity, and Risk of All-Cause Mortality: A Systematic Review and Dose-Response Meta-Analysis of Prospective Observational Studies.
    Jayedi A; Rashidy-Pour A; Parohan M; Zargar MS; Shab-Bidar S · Advances in nutrition (Bethesda, Md.) · 2019
    Meta-analysis507,251 participants41 studies pooledGeneral Health forSelenium
  63. The efficacy and safety of selenium supplementation versus placebo in the treatment of Graves' orbitopathy: A systematic review and meta-analysis of randomised controlled trials.
    Sharabati I; Qafesha RM; Hindawi MD; Amro S; Ayesh BM · Clinical endocrinology · 2024
    Meta-analysis4 studies pooledGeneral Health forSelenium
  64. Associations of plasma metal concentrations with the risks of all-cause and cardiovascular disease mortality in Chinese adults.
    Shi L; Yuan Y; Xiao Y; Long P; Li W; Yu Y; Liu Y; Liu K; Wang H; Zhou L; Yang H; Li X; He M; Wu T · Environment international · 2021
    Cohort study6,155 participantsGeneral Health forSelenium
  65. Updates on clinical studies of selenium supplementation in radiotherapy.
    Puspitasari IM; Abdulah R; Yamazaki C; Kameo S; Nakano T; Koyama H · Radiation oncology (London, England) · 2015
    Systematic review16 studies pooledGeneral Health forSelenium
  66. Vitamin D supplementation for prevention of mortality in adults.
    Bjelakovic G; Gluud LL; Nikolova D; Whitfield K; Wetterslev J; Simonetti RG; Bjelakovic M; Gluud C · The Cochrane database of systematic reviews · 2014
    Meta-analysis95,286 participants159 studies pooledGeneral Health forVitamin D
  67. Effect of vitamin D on gastrointestinal symptoms and health-related quality of life in irritable bowel syndrome patients: a randomized double-blind clinical trial.
    Abbasnezhad A; Amani R; Hajiani E; Alavinejad P; Cheraghian B; Ghadiri A · Neurogastroenterology and motility · 2018
    Randomized trial90 participantsGeneral Health forVitamin D
  68. The impact of vitamin D administration on mortality in COVID-19 patients: a systematic review and meta-analysis of randomized controlled trials.
    Kow CS; Ramachandram DS; Hasan SS; Wong Z; Thiruchelvam K · Inflammopharmacology · 2024
    Meta-analysis2,495 participants19 studies pooledGeneral Health forVitamin D
  69. Vitamin D Status and Mortality: A Systematic Review of Observational Studies.
    Heath AK; Kim IY; Hodge AM; English DR; Muller DC · International journal of environmental research and public health · 2019
    Systematic review84 studies pooledGeneral Health forVitamin D
  70. Meta-analysis of long-term vitamin D supplementation on overall mortality.
    Zheng Y; Zhu J; Zhou M; Cui L; Yao W; Liu Y · PloS one · 2014
    Meta-analysis42 studies pooledGeneral Health forVitamin D
  71. Effectiveness of sodium bicarbonate and zinc chloride mouthwashes in the treatment of oral mucositis and quality of life in patients with cancer under chemotherapy.
    Mohammadi F; Oshvandi K; Kamallan SR; Khazaei S; Ranjbar H; Ahmadi-Motamayel F; Gillespie M; Jenabi E; Vafaei SY · Nursing open · 2022
    Randomized trial144 participantsGeneral Health forZinc
  72. Zinc supplementation in young children with acute diarrhea in India.
    Sazawal S; Black RE; Bhan MK; Bhandari N; Sinha A; Jalla S · The New England journal of medicine · 1995
    Randomized trial937 participantsGeneral Health forZinc
  73. Associations of mortality with ocular disorders and an intervention of high-dose antioxidants and zinc in the Age-Related Eye Disease Study: AREDS Report No. 13.
    Clemons TE; Kurinij N; Sperduto RD; AREDS Research Group · Archives of ophthalmology (Chicago, Ill. : 1960) · 2004
    Randomized trial4,753 participantsGeneral Health forZinc
  74. Effects of zinc and probiotic co-supplementation on inflammation, gastrointestinal symptoms, quality of life, and mood in irritable bowel syndrome patients.
    Rezazadegan M; Soheilipour M; Amani R · Scientific reports · 2026
    Randomized trial84 participantsGeneral Health forZinc
  75. Effect of zinc sulfate supplementation on premenstrual syndrome and health-related quality of life: Clinical randomized controlled trial.
    Siahbazi S; Behboudi-Gandevani S; Moghaddam-Banaem L; Montazeri A · The journal of obstetrics and gynaecology research · 2018
    Randomized trial142 participantsGeneral Health forZinc
  76. Effects of Withania somnifera root extract serum application on hair health in healthy adults: A prospective, double-blind, randomized, parallel, placebo-controlled study.
    Yerram C; Jillella A; Reddy V · Journal of Ayurveda and integrative medicine · 2023
    Randomized trial61 participantsHair Health forAshwagandha
  77. A Prospective, Randomized, Double-Blind, Placebo-Controlled Clinical Study of Efficacy and Safety of Ashwagandha Root Extract Capsule on Skin and Hair Health in Healthy Adults.
    Jillella A; Keerthi N; Venkateswar Reddy J · Phytotherapy research : PTR · 2026
    Randomized trialHair Health forAshwagandha
  78. [Evaluation of the role of dietary intake in the occurrence of alopecia].
    El Fékih N; Kamoun H; Fazaa B; El Ati J; Zouari B; Kamoun MR; Gaigi S · Revue medicale de Liege · 2010
    Case-control study272 participantsHair Health forIodine
  79. Beyond Efficacy: 0.6% Selenium Disulfide Shampoo Matches 2% Ketoconazole for Seborrheic Dermatitis with Superior Cosmesis.
    Farris PK; Barbosa V; Houshman EB; Kovylkina N · Journal of drugs in dermatology : JDD · 2026
    Randomized trial87 participantsHair Health forSelenium
  80. Selenium Disulfide-based shampoo applied for 4 weeks significantly improves dandruff and seborrheic dermatitis.
    Turcu G; Artenie C; Nowicka D; Arenbergerová M; Lazaridou E; Khobzei K; Ataseven A; Part M; Leclerc-Mercier S · European journal of dermatology : EJD · 2023
    Observational study1,407 participantsHair Health forSelenium
  81. A Comparative Randomized Clinical Study Assessing the Efficacy of a 1% Selenium Disulfide-Based Shampoo versus 2% Ketoconazole Shampoo in Subjects with Moderate to Severe Scalp Seborrheic Dermatitis.
    Barbosa V; Melo DF; Vañó-Galván S; Lutchmanen-Kolanthan V; Sant'Anna B; Leclerc-Mercier S; Reygagne P · Skin appendage disorders · 2025
    Randomized trial64 participantsHair Health forSelenium
  82. Changes of serum trace elements level in patients with alopecia areata: A meta-analysis.
    Jin W; Zheng H; Shan B; Wu Y · The Journal of dermatology · 2018
    Meta-analysis764 participantsHair Health forSelenium
  83. Scientific opinion on the tolerable upper intake level for selenium.
    EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA); Turck D; Bohn T; Castenmiller J; de Henauw S; Hirsch-Ernst KI; Knutsen HK; Maciuk A; Mangelsdorf I; McArdle HJ; Peláez C; Pentieva K; Siani A; Thies F; Tsabouri S; Vinceti M; Aggett P; Crous Bou M; Cubadda F; Ciccolallo L; de Sesmaisons Lecarré A; Fabiani L; Titz A; Naska A · EFSA journal. European Food Safety Authority · 2023
    Systematic reviewHair Health forSelenium
  84. Management of hair loss associated with endocrine therapy in patients with breast cancer: an overview.
    Karatas F; Sahin S; Sever AR; Altundag K · SpringerPlus · 2016
    Narrative reviewHair Health forVitamin C
  85. Elucidating causal relationships of diet-derived circulating antioxidants and the risk of non-scarring alopecia: A Mendelian randomization study.
    Ba Y; Shen L; Peng X; Zhang Y; Wang J · Medicine · 2024
    Methods validation study201,019 participantsHair Health forVitamin C
  86. Alterations of plasma antioxidants and mitochondrial DNA mutation in hair follicles of smokers.
    Liu CS; Chen HW; Lii CK; Tsai CS; Kuo CL; Wei YH · Environmental and molecular mutagenesis · 2002
    Observational studyHair Health forVitamin C
  87. Removal of synthetic hair dye using formamidine sulfinic acid and other sulfinate precursors.
    Hawkes JA; Lewis DM; Mama J; Murray J · International journal of cosmetic science · 2026
    Methods validation studyHair Health forVitamin C
  88. A Zinc Sulphate-Resistant Acrodermatitis Enteropathica Patient with a Novel Mutation in SLC39A4 Gene.
    Kilic M; Taskesen M; Coskun T; Gürakan F; Tokatli A; Sivri HS; Dursun A; Schmitt S; Küry S · JIMD reports · 2013
    Case reportHair Health forVitamin C
  89. Increased prevalence of vitamin D deficiency in patients with alopecia areata: a systematic review and meta-analysis.
    Lee S; Kim BJ; Lee CH; Lee WS · Journal of the European Academy of Dermatology and Venereology : JEADV · 2018
    Meta-analysis2,039 participants14 studies pooledHair Health forVitamin D
  90. Intralesional vitamin D3 in treatment of alopecia areata: A randomized controlled clinical trial.
    Rashad AF; Elgamal E; Fouda I · Journal of cosmetic dermatology · 2022
    Randomized trial60 participantsHair Health forVitamin D
  91. Vitamin D and its Analogs in Treatment of Mild to Moderate Alopecia Areata: Systematic Review and Meta-Analysis.
    Alsaati AA; Kaliyadan F; Alsaadoun D; Alzakry LM; Alzabadin RA; Hakami TH; Rubaian NFB · Indian dermatology online journal · 2025
    Meta-analysisHair Health forVitamin D
  92. Topical calcipotriol vs narrowband ultraviolet B in treatment of alopecia areata: a randomized-controlled trial.
    El Taieb MA; Hegazy EM; Ibrahim HM; Osman AB; Abualhamd M · Archives of dermatological research · 2020
    Randomized trial60 participantsHair Health forVitamin D
  93. Serum 25 hydroxyvitamin D in non-scarring alopecia: A systematic review and meta-analysis.
    Chen Y; Dong X; Wang Y; Li Y; Xiong L; Li L · Journal of cosmetic dermatology · 2024
    Meta-analysis10,670 participants23 studies pooledHair Health forVitamin D
  94. The effects of minoxidil, 1% pyrithione zinc and a combination of both on hair density: a randomized controlled trial.
    Berger RS; Fu JL; Smiles KA; Turner CB; Schnell BM; Werchowski KM; Lammers KM · The British journal of dermatology · 2003
    Randomized trial200 participantsHair Health forZinc
  95. Incubatory environment of the scalp impacts pre-emergent hair to affect post-emergent hair cuticle integrity.
    Schwartz JR; Henry JP; Kerr KM; Flagler MJ; Page SH; Redman-Furey N · Journal of cosmetic dermatology · 2018
    Randomized trialHair Health forZinc
  96. A comparison of hair quality and cosmetic acceptance following the use of two anti-dandruff shampoos.
    Draelos ZD; Kenneally DC; Hodges LT; Billhimer W; Copas M; Margraf C · The journal of investigative dermatology. Symposium proceedings · 2006
    Randomized trial40 participantsHair Health forZinc
  97. BMI and levels of zinc, copper in hair, serum and urine of Turkish male patients with androgenetic alopecia.
    Ozturk P; Kurutas E; Ataseven A; Dokur N; Gumusalan Y; Gorur A; Tamer L; Inaloz S · Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) · 2015
    Case-control study216 participantsHair Health forZinc
  98. Analysis of serum zinc and copper concentrations in hair loss.
    Kil MS; Kim CW; Kim SS · Annals of dermatology · 2013
    Case-control study342 participantsHair Health forZinc
  99. Effects of selenium supplementation on selenoprotein gene expression and response to influenza vaccine challenge: a randomised controlled trial.
    Goldson AJ; Fairweather-Tait SJ; Armah CN; Bao Y; Broadley MR; Dainty JR; Furniss C; Hart DJ; Teucher B; Hurst R · PloS one · 2011
    Randomized trial119 participantsImmunity forSelenium
  100. Effect of selenium on immune response against hepatitis B vaccine with accelerated method in insulin-dependent diabetes mellitus patients.
    Janbakhsh A; Mansouri F; Vaziri S; Sayad B; Afsharian M; Rahimi M; Shahebrahimi K; Salari F · Caspian journal of internal medicine · 2013
    Randomized trial62 participantsImmunity forSelenium
  101. Chemoprevention trial of human hepatitis with selenium supplementation in China.
    Yu SY; Li WG; Zhu YJ; Yu WP; Hou C · Biological trace element research · 1990
    Non-randomized trial20,847 participantsImmunity forSelenium
  102. Selenium nanoparticles as adjunctive therapy in sepsis: A pilot randomized clinical trial.
    Gu WJ; Huang W; Zhao FZ; Yuan XK; Jin K; Chen JL; Zhang CY; Huang Y; He L; Zhuang H; Yin HY; Chen T · Drug resistance updates : reviews and commentaries in antimicrobial and anticancer chemotherapy · 2026
    Randomized trial70 participantsImmunity forSelenium
  103. Selenium supplementation in patients with autoimmune thyroiditis decreases thyroid peroxidase antibodies concentrations.
    Gärtner R; Gasnier BC; Dietrich JW; Krebs B; Angstwurm MW · The Journal of clinical endocrinology and metabolism · 2002
    Randomized trial70 participantsImmunity forSelenium
  104. Depressed immune response to tetanus in children with vitamin A deficiency.
    Semba RD; Muhilal; Scott AL; Natadisastra G; Wirasasmita S; Mele L; Ridwan E; West KP; Sommer A · The Journal of nutrition · 1992
    Randomized trial236 participantsImmunity forVitamin A
  105. Impact of a single megadose of vitamin A at delivery on breastmilk of mothers and morbidity of their infants.
    Roy SK; Islam A; Molla A; Akramuzzaman SM; Jahan F; Fuchs G · European journal of clinical nutrition · 1997
    Randomized trial50 participantsImmunity forVitamin A
  106. Vitamin A supplementation reduces measles morbidity in young African children: a randomized, placebo-controlled, double-blind trial.
    Coutsoudis A; Broughton M; Coovadia HM · The American journal of clinical nutrition · 1991
    Randomized trial60 participantsImmunity forVitamin A
  107. Vitamin A supplementation enhances specific IgG antibody levels and total lymphocyte numbers while improving morbidity in measles.
    Coutsoudis A; Kiepiela P; Coovadia HM; Broughton M · The Pediatric infectious disease journal · 1992
    Randomized trial60 participantsImmunity forVitamin A
  108. Vitamin A supplementation reduces the monocyte chemoattractant protein-1 intestinal immune response of Mexican children.
    Long KZ; Santos JI; Estrada Garcia T; Haas M; Firestone M; Bhagwat J; Dupont HL; Hertzmark E; Rosado JL; Nanthakumar NN · The Journal of nutrition · 2006
    Randomized trial127 participantsImmunity forVitamin A
  109. Vitamin C and contribution to the normal function of the immune system: evaluation of a health claim pursuant to Article 14 of Regulation (EC) No 1924/2006.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusImmunity forVitamin C
  110. Therapeutic effects of high-dose vitamin C supplementation in patients with COVID-19: a meta-analysis.
    Sun L; Zhao JH; Fan WY; Feng B; Liu WW; Chen RQ; Ban C; Dang AG; Wang M; Luo KT; Zhou GY; Yu FF; Ba Y · Nutrition reviews · 2024
    Meta-analysis2,334 participants14 studies pooledImmunity forVitamin C
  111. Effect of micronutrient supplements on influenza and other respiratory tract infections among adults: a systematic review and meta-analysis.
    Abioye AI; Bromage S; Fawzi W · BMJ global health · 2021
    Meta-analysisImmunity forVitamin C
  112. New evidence for antioxidant properties of vitamin C.
    Vojdani A; Bazargan M; Vojdani E; Wright J · Cancer detection and prevention · 2001
    Randomized trial20 participantsImmunity forVitamin C
  113. Enhanced Vitamin C Delivery: A Systematic Literature Review Assessing the Efficacy and Safety of Alternative Supplement Forms in Healthy Adults.
    Calder PC; Kreider RB; McKay DL · Nutrients · 2025
    Systematic review13 studies pooledImmunity forVitamin C
  114. Vitamin D supplementation to prevent acute respiratory infections: individual participant data meta-analysis.
    Martineau AR; Jolliffe DA; Greenberg L; Aloia JF; Bergman P; Dubnov-Raz G; Esposito S; Ganmaa D; Ginde AA; Goodall EC; Grant CC; Janssens W; Jensen ME; Kerley CP; Laaksi I; Manaseki-Holland S; Mauger D; Murdoch DR; Neale R; Rees JR; Simpson S; Stelmach I; Trilok Kumar G; Urashima M; Camargo CA; Griffiths CJ; Hooper RL · Health technology assessment (Winchester, England) · 2020
    Meta-analysis11,321 participants25 studies pooledImmunity forVitamin D
  115. Association Between Vitamin D and Influenza: Meta-Analysis and Systematic Review of Randomized Controlled Trials.
    Zhu Z; Zhu X; Gu L; Zhan Y; Chen L; Li X · Frontiers in nutrition · 2022
    Meta-analysis4,859 participants10 studies pooledImmunity forVitamin D
  116. Vitamin D3 and deconvoluting a rash.
    Ernst MK; Evans ST; Techner JM; Rothbaum RM; Christensen LF; Onay UV; Biyashev D; Demczuk MM; Nguyen CV; Honda KS; McCormick TS; Tsoi LC; Gudjonsson JE; Cooper KD; Lu KQ · JCI insight · 2023
    Randomized trial28 participantsImmunity forVitamin D
  117. Effect of vitamin D3 supplementation on cellular immunity and inflammatory markers in COVID-19 patients admitted to the ICU.
    Bychinin MV; Klypa TV; Mandel IA; Yusubalieva GM; Baklaushev VP; Kolyshkina NA; Troitsky AV · Scientific reports · 2022
    Randomized trial110 participantsImmunity forVitamin D
  118. Current opinion on the role of vitamin D supplementation in respiratory infections and asthma/COPD exacerbations: A need to establish publication guidelines for overcoming the unpublished data.
    Anitua E; Tierno R; Alkhraisat MH · Clinical nutrition (Edinburgh, Scotland) · 2022
    Meta-analysis50,554 participants65 studies pooledImmunity forVitamin D
  119. Nutrient supplementation for prevention of viral respiratory tract infections in healthy subjects: A systematic review and meta-analysis.
    Vlieg-Boerstra B; de Jong N; Meyer R; Agostoni C; De Cosmi V; Grimshaw K; Milani GP; Muraro A; Oude Elberink H; Pali-Schöll I; Roduit C; Sasaki M; Skypala I; Sokolowska M; van Splunter M; Untersmayr E; Venter C; O'Mahony L; Nwaru BI · Allergy · 2022
    Meta-analysis199,055 participants115 studies pooledImmunity forZinc
  120. Zinc supplementation reduces the incidence of acute lower respiratory infections in infants and preschool children: a double-blind, controlled trial.
    Sazawal S; Black RE; Jalla S; Mazumdar S; Sinha A; Bhan MK · Pediatrics · 1998
    Randomized trial609 participantsImmunity forZinc
  121. A randomized controlled trial of zinc supplementation in the treatment of acute respiratory tract infection in Thai children.
    Rerksuppaphol S; Rerksuppaphol L · Pediatric reports · 2020
    Randomized trial64 participantsImmunity forZinc
  122. The effect of zinc and vitamin A supplementation on immune response in an older population.
    Fortes C; Forastiere F; Agabiti N; Fano V; Pacifici R; Virgili F; Piras G; Guidi L; Bartoloni C; Tricerri A; Zuccaro P; Ebrahim S; Perucci CA · Journal of the American Geriatrics Society · 1998
    Randomized trial136 participantsImmunity forZinc
  123. The role of specific nutrients in preventing immune system and blood cell disorders: an umbrella review.
    Vecchietti A; Strano P; Minutolo G; Grieco V; Cappuccio G; Granvillano G; Confalonieri L; Briganti GL; Raso E; Chimienti M; Pellegrini M; Mercogliano M; Spatari G; Lugli C; Urbano T; Lorenzon A · Journal of preventive medicine and hygiene · 2026
    Systematic review13 studies pooledImmunity forZinc
  124. Effect of oral iodized oil on thyroid size and thyroid hormone metabolism in children with concurrent selenium and iodine deficiency.
    Zimmermann MB; Adou P; Torresani T; Zeder C; Hurrell RF · European journal of clinical nutrition · 2000
    Single-arm trial51 participantsMetabolism Boost forIodine
  125. Serum Iodine Concentration as a Biomarker for Individual Iodine Nutrition and Thyroid Function in Pregnant Women: A Cross-Sectional Study in Hubei Province.
    Xu M; Dai X; Wang Z; Guo C; Zhang B; Guo H · Public health nutrition · 2026
    Cross-sectional study1,197 participantsMetabolism Boost forIodine
  126. Iron status influences the efficacy of iodine prophylaxis in goitrous children in Côte d'Ivoire.
    Zimmermann MB · International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition · 2002
    OtherMetabolism Boost forIodine
  127. Persistence of goiter despite oral iodine supplementation in goitrous children with iron deficiency anemia in Côte d'Ivoire.
    Zimmermann M; Adou P; Torresani T; Zeder C; Hurrell R · The American journal of clinical nutrition · 2000
    Non-randomized trial109 participantsMetabolism Boost forIodine
  128. Effects of selenium supplementation on glucose homeostasis, inflammation, and oxidative stress in gestational diabetes: Randomized, double-blind, placebo-controlled trial.
    Asemi Z; Jamilian M; Mesdaghinia E; Esmaillzadeh A · Nutrition (Burbank, Los Angeles County, Calif.) · 2016
    Randomized trial70 participantsMetabolism Boost forSelenium
  129. Metabolic response to selenium supplementation in women with polycystic ovary syndrome: a randomized, double-blind, placebo-controlled trial.
    Jamilian M; Razavi M; Fakhrie Kashan Z; Ghandi Y; Bagherian T; Asemi Z · Clinical endocrinology · 2016
    Randomized trial70 participantsMetabolism Boost forSelenium
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    Hu X; Wang W; Su X; Peng H; Tan Z; Li Y; Huang Y · PeerJ · 2023
    Meta-analysis2,362 participants41 studies pooledMetabolism Boost forSelenium
  131. The Effects of Selenium Supplementation on Gene Expression Related to Insulin and Lipid Metabolism, and Pregnancy Outcomes in Patients with Gestational Diabetes Mellitus: a Randomized, Double-Blind, Placebo-Controlled Trial.
    Karamali M; Dastyar F; Badakhsh MH; Aghadavood E; Amirani E; Asemi Z · Biological trace element research · 2021
    Randomized trial36 participantsMetabolism Boost forSelenium
  132. Glycemic and lipid responses to selenium-enriched vs. zeaxanthin-enriched eggs in patients with type 2 diabetes: a 12-week randomized controlled trial.
    Niu X; Zhang Y; Liu Y; Zhu Y; Fang B; Hu C; Xu X; Wang R; Sang Y; Zhang Q; Guo J · Frontiers in nutrition · 2026
    Randomized trial58 participantsMetabolism Boost forSelenium
  133. Relationship between zinc and glucose metabolism in Japanese adults.
    Suka M; Tsuruta H; Takao T; Yanagisawa H · Diabetology international · 2026
    Cross-sectional study533 participantsMetabolism Boost forZinc
  134. Zinc and the Innovative Zinc-α2-Glycoprotein Adipokine Play an Important Role in Lipid Metabolism: A Critical Review.
    Banaszak M; Górna I; Przysławski J · Nutrients · 2021
    Narrative reviewMetabolism Boost forZinc
  135. Capsaicin and Zinc Signalling Pathways as Promising Targets for Managing Insulin Resistance and Type 2 Diabetes.
    Ferdowsi PV; Ahuja KDK; Beckett JM; Myers S · Molecules (Basel, Switzerland) · 2023
    Narrative reviewMetabolism Boost forZinc
  136. Zinc and Diabetes: A Connection between Micronutrient and Metabolism.
    Ahmad R; Shaju R; Atfi A; Razzaque MS · Cells · 2024
    Narrative reviewMetabolism Boost forZinc
  137. A proprietary herbal extract of ashwagandha root for stress and anxiety in healthy adults: a randomized, double-blind, three-arm, placebo-controlled efficacy and safety study.
    West RE; Biswas A; Rao R; Tayade H; Ademola J · Journal of medicine and life · 2026
    Randomized trial141 participantsMood Support forAshwagandha
  138. Safety and efficacy of Withania somnifera for anxiety and insomnia: Systematic review and meta-analysis.
    Fatima K; Malik J; Muskan F; Raza G; Waseem A; Shahid H; Jaffery SF; Khan U; Zaheer MK; Shaikh Y; Rashid AM · Human psychopharmacology · 2024
    Meta-analysis254 participants5 studies pooledMood Support forAshwagandha
  139. Medicinal herbs for the treatment of anxiety: A systematic review and network meta-analysis.
    Zhang W; Yan Y; Wu Y; Yang H; Zhu P; Yan F; Zhao R; Tian P; Wang T; Fan Q; Su Z · Pharmacological research · 2022
    Meta-analysis29 participants29 studies pooledMood Support forAshwagandha
  140. Ashwagandha Root Extract Stabilises Physiological Stress Responses in Male and Female Team Sports Athletes During Pre-Season Training.
    Coope OC; Otaegui E; Suárez M; Levington A; Abad-Sangrà M; Lloyd B; Spurr TJ; Roman-Viñas B · Nutrients · 2026
    Randomized trial56 participantsMuscle Gain forAshwagandha
  141. Evaluation of Withania somnifera (L.) Dunal (Ashwagandha) on Physical Performance, Biomarkers of Inflammation, and Muscle Status in Healthy Volunteers: A Randomized, Double-Blind, Placebo-Controlled Study.
    Raut A; Tripathi R; Marathe PA; Uchil DA; Agashe S; Rege N; Vaidya AB · Cureus · 2024
    Randomized trialMuscle Gain forAshwagandha
  142. Examining the effect of Withania somnifera supplementation on muscle strength and recovery: a randomized controlled trial.
    Wankhede S; Langade D; Joshi K; Sinha SR; Bhattacharyya S · Journal of the International Society of Sports Nutrition · 2016
    Randomized trial57 participantsMuscle Gain forAshwagandha
  143. Active vitamin D treatment in the prevention of sarcopenia in adults with prediabetes (DPVD ancillary study): a randomised controlled trial.
    Kawahara T; Suzuki G; Mizuno S; Tominaga N; Toda M; Toyama N; Inazu T; Kawahara C; Okada Y; Tanaka Y · The lancet. Healthy longevity · 2024
    Randomized trial1,094 participantsMuscle Gain forVitamin D
  144. Effects of Leucine Supplementation in Older Adults with Sarcopenia: A Meta-Analysis.
    Huang C; Hsieh MH · Nutrients · 2025
    Meta-analysis566 participantsMuscle Gain forVitamin D
  145. Influence of vitamin D on sarcopenia pathophysiology: A longitudinal study in humans and basic research in knockout mice.
    Mizuno T; Hosoyama T; Tomida M; Yamamoto Y; Nakamichi Y; Kato S; Kawai-Takaishi M; Ishizuka S; Nishita Y; Tange C; Shimokata H; Imagama S; Otsuka R · Journal of cachexia, sarcopenia and muscle · 2022
    Cohort study1,653 participantsMuscle Gain forVitamin D
  146. A randomized study on the effect of vitamin D₃ supplementation on skeletal muscle morphology and vitamin D receptor concentration in older women.
    Ceglia L; Niramitmahapanya S; da Silva Morais M; Rivas DA; Harris SS; Bischoff-Ferrari H; Fielding RA; Dawson-Hughes B · The Journal of clinical endocrinology and metabolism · 2014
    Randomized trial21 participantsMuscle Gain forVitamin D
  147. Bioelectrical impedance vector analysis for evaluating zinc supplementation in prepubertal and healthy children.
    Dantas MM; Rocha ÉD; Brito NJ; Alves CX; França MC; das Graças Almeida M; Brandão-Neto J · Food & nutrition research · 2015
    Randomized trial60 participantsMuscle Gain forZinc
  148. Dietary Zinc Intakes Are Associated With Skeletal Muscle Mass and Strength in Children and Adolescents: Zinc and Muscle in Children.
    Kong FS; Ma CM · Clinical pediatrics · 2024
    Cross-sectional studyMuscle Gain forZinc
  149. Association of Serum Concentrations of Copper, Selenium, and Zinc with Grip Strength Based on NHANES 2013-2014.
    Chen K; Zhou J; Liu N; Meng X · Biological trace element research · 2024
    Cross-sectional studyMuscle Gain forZinc
  150. Acute selenium toxicity associated with a dietary supplement.
    MacFarquhar JK; Broussard DL; Melstrom P; Hutchinson R; Wolkin A; Martin C; Burk RF; Dunn JR; Green AL; Hammond R; Schaffner W; Jones TF · Archives of internal medicine · 2010
    Observational study201 participantsNail Health forSelenium
  151. Vitamin C Deficiency in Inflammatory Bowel Disease: The Forgotten Micronutrient.
    Dunleavy KA; Ungaro RC; Manning L; Gold S; Novak J; Colombel JF · Crohn's & colitis 360 · 2023
    Other20 participantsNail Health forVitamin C
  152. Vitamins and minerals: their role in nail health and disease.
    Scheinfeld N; Dahdah MJ; Scher R · Journal of drugs in dermatology : JDD · 2007
    Narrative reviewNail Health forZinc
  153. Clinical evaluation of the pharmacological impact of ashwagandha root extract on sleep in healthy volunteers and insomnia patients: A double-blind, randomized, parallel-group, placebo-controlled study.
    Langade D; Thakare V; Kanchi S; Kelgane S · Journal of ethnopharmacology · 2021
    Randomized trial80 participantsProductivity Boost Sleep Support forAshwagandha
  154. Effect of standardized aqueous extract of Withania somnifera on tests of cognitive and psychomotor performance in healthy human participants.
    Pingali U; Pilli R; Fatima N · Pharmacognosy research · 2014
    Randomized trial20 participantsProductivity Boost forAshwagandha
  155. Comparative clinical trial of bifonazole solution versus selenium sulphide shampoo in the treatment of pityriasis versicolor.
    Chu AC · Dermatologica · 1985
    Randomized trial38 participantsSkin Health forSelenium
  156. Selenium supplementation and secondary prevention of nonmelanoma skin cancer in a randomized trial.
    Duffield-Lillico AJ; Slate EH; Reid ME; Turnbull BW; Wilkins PA; Combs GF; Park HK; Gross EG; Graham GF; Stratton MS; Marshall JR; Clark LC; Nutritional Prevention of Cancer Study Group · Journal of the National Cancer Institute · 2003
    Randomized trial1,312 participantsSkin Health forSelenium
  157. Evidence-Based Nutritional Interventions in Wound Care.
    Saeg F; Orazi R; Bowers GM; Janis JE · Plastic and reconstructive surgery · 2021
    Systematic review2,339 participants36 studies pooledSkin Health forSelenium Skin Health forZinc
  158. A randomized, double-blind placebo-controlled trial evaluating the effects of vitamin E and selenium on arsenic-induced skin lesions in Bangladesh.
    Verret WJ; Chen Y; Ahmed A; Islam T; Parvez F; Kibriya MG; Graziano JH; Ahsan H · Journal of occupational and environmental medicine · 2006
    Randomized trial121 participantsSkin Health forSelenium
  159. The Whitening, Moisturizing, Anti-aging Activities, and Skincare Evaluation of Selenium-Enriched Mung Bean Fermentation Broth.
    Wei K; Guo C; Zhu J; Wei Y; Wu M; Huang X; Zhang M; Li J; Wang X; Wang Y; Wei X · Frontiers in nutrition · 2022
    Clinical trial31 participantsSkin Health forSelenium
  160. Efficacy and Tolerability of Topical 0.1% Stabilized Bioactive Retinol for Photoaging: A Vehicle-Controlled Integrated Analysis.
    Farris P; Berson D; Bhatia N; Goldberg D; Lain E; Mariwalla K; Zeichner J; Miller D; McGuire T; Kizoulis M · Journal of drugs in dermatology : JDD · 2024
    Meta-analysis471 participants6 studies pooledSkin Health forVitamin A
  161. Tensile properties and contours of aging facial skin. A controlled double-blind comparative study of the effects of retinol, melibiose-lactose and their association.
    Piérard-Franchimont C; Castelli D; Cromphaut IV; Bertin C; Ries G; Cauwenbergh G; Piérard GE · Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI) · 2016
    Randomized trial120 participantsSkin Health forVitamin A
  162. Antiaging action of retinol: from molecular to clinical.
    Bellemère G; Stamatas GN; Bruère V; Bertin C; Issachar N; Oddos T · Skin pharmacology and physiology · 2009
    Randomized trial48 participantsSkin Health forVitamin A
  163. An Updated Review of Topical Tretinoin in Dermatology: From Acne and Photoaging to Skin Cancer.
    Balado-Simó P; Morgado-Carrasco D; Gómez-Armayones S; López-Ferrer A; Barco D; Ferrándiz-Pulido C; Podlipnik S · Journal of clinical medicine · 2025
    Narrative reviewSkin Health forVitamin A
  164. Novel Cyclized Hexapeptide-9 Outperforms Retinol Against Skin Aging: A Randomized, Double-Blinded, Active- and Vehicle-Controlled Clinical Trial.
    Chang H; Tao K; Yang Y; Wang Y; Ge M; Wang X; Tang S; Yu H · Journal of cosmetic dermatology · 2025
    Randomized trialSkin Health forVitamin A
  165. Evaluation of the anti-wrinkle effect of an ascorbic acid-loaded dissolving microneedle patch via a double-blind, placebo-controlled clinical study.
    Lee C; Yang H; Kim S; Kim M; Kang H; Kim N; An S; Koh J; Jung H · International journal of cosmetic science · 2017
    Randomized trial23 participantsSkin Health forVitamin C
  166. Comparative Study on the Outcome of Periorbital Wrinkles Treated with Laser-Assisted Delivery of Vitamin C or Vitamin C Plus Growth Factors: A Randomized, Double-blind, Clinical Trial.
    Machado BHB; Frame J; Zhang J; Najlah M · Aesthetic plastic surgery · 2021
    Randomized trial149 participantsSkin Health forVitamin C
  167. Randomized trial of topical ascorbic acid in DMSO versus imiquimod for the treatment of basal cell carcinoma.
    Burke B; Bailie JE · Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2022
    Randomized trial25 participantsSkin Health forVitamin C
  168. Vitamin C improves healing of foot ulcers: a randomised, double-blind, placebo-controlled trial.
    Gunton JE; Girgis CM; Lau T; Vicaretti M; Begg L; Flood V · The British journal of nutrition · 2022
    Randomized trial16 participantsSkin Health forVitamin C
  169. Dietary nutrient intakes and skin-aging appearance among middle-aged American women.
    Cosgrove MC; Franco OH; Granger SP; Murray PG; Mayes AE · The American journal of clinical nutrition · 2007
    Cross-sectional study4,025 participantsSkin Health forVitamin C
  170. Sex-related differences in response to zinc pyrithione shampoo vs. non-anti-dandruff shampoo.
    Collins LZ; Baines FL; Matheson JR; Turner GA; Diao Y; Li Y; Pi Y · International journal of cosmetic science · 2019
    Meta-analysis2,088 participants20 studies pooledSkin Health forZinc
  171. Maintenance of an Acidic Skin Surface with a Novel Zinc Lactobionate Emollient Preparation Improves Skin Barrier Function in Patients with Atopic Dermatitis.
    Andrew PV; Pinnock A; Poyner A; Brown K; Chittock J; Kay LJ; Cork MJ; Danby SG · Dermatology and therapy · 2024
    Cohort study23 participantsSkin Health forZinc
  172. Spatial expression of metallothionein, matrix metalloproteinase-1 and Ki-67 in human epidermal wounds treated with zinc and determined by quantitative immunohistochemistry: A randomised double-blind trial.
    Ågren MS; Chafranska L; Eriksen JO; Forman JL; Bjerrum MJ; Schjerling P; Larsen HF; Cottarelli E; Jorgensen LN; Gjerdrum LMR · European journal of cell biology · 2021
    Randomized trial30 participantsSkin Health forZinc
  173. A pilot trial using topical regular crystalline insulin vs. aqueous zinc solution for uncomplicated cutaneous wound healing: Impact on quality of life.
    Attia EA; Belal DM; El Samahy MH; El Hamamsy MH · Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society · 2014
    Randomized trial90 participantsSkin Health forZinc
  174. Efficacy and safety of Ashwagandha root extract sustained-release (AshwaSR) capsules in healthy adult, stressed subjects: A randomized, double-blind, placebo-controlled, parallel-group, 3-arm clinical trial.
    Thanawala S; Shah R; Alluri KV; Bhupathiraju K; Desomayanandanam P; Bhuvenendran A · Medicine · 2026
    Randomized trial135 participantsSleep Support forAshwagandha
  175. Efficacy and Safety of Ashwagandha (Withania somnifera) Root Extract in Insomnia and Anxiety: A Double-blind, Randomized, Placebo-controlled Study.
    Langade D; Kanchi S; Salve J; Debnath K; Ambegaokar D · Cureus · 2020
    Randomized trial60 participantsSleep Support forAshwagandha
  176. The effects of iron and/or zinc supplementation on maternal reports of sleep in infants from Nepal and Zanzibar.
    Kordas K; Siegel EH; Olney DK; Katz J; Tielsch JM; Kariger PK; Khalfan SS; LeClerq SC; Khatry SK; Stoltzfus RJ · Journal of developmental and behavioral pediatrics : JDBP · 2009
    Randomized trial1,444 participantsSleep Support forZinc
  177. Effect of zinc supplementation on quality of life and sleep quality in young women with premenstrual syndrome: a randomized, double-blind, placebo-controlled trial.
    Jafari F; Tarrahi MJ; Farhang A; Amani R · Archives of gynecology and obstetrics · 2020
    Randomized trial60 participantsSleep Support forZinc
  178. Skin-protective effects of a zinc oxide-functionalized textile and its relevance for atopic dermatitis.
    Wiegand C; Hipler UC; Boldt S; Strehle J; Wollina U · Clinical, cosmetic and investigational dermatology · 2013
    Non-randomized trialSleep Support forZinc
  179. Associations of serum zinc, copper, and selenium with sleep disorders in the American adults: Data from NHANES 2011-2016.
    Deng MG; Liu F; Liang Y; Chen Y; Nie JQ; Chai C; Wang K · Journal of affective disorders · 2023
    Cross-sectional study3,660 participantsSleep Support forZinc
  180. Magnesium and Zinc Are Associated with Sleep Quality in Saudi Adults: Evidence from a Cross-Sectional Study.
    Al-Musharaf S; Aldhwayan MM; Mazi TA; Abujabir O; Alfawaz W; Aljuraiban GS · Nutrients · 2026
    Cross-sectional study1,041 participantsSleep Support forZinc
  181. An investigation into the stress-relieving and pharmacological actions of an ashwagandha (Withania somnifera) extract: A randomized, double-blind, placebo-controlled study.
    Lopresti AL; Smith SJ; Malvi H; Kodgule R · Medicine · 2019
    Randomized trial60 participantsStress Relief forAshwagandha
  182. Shoden promotes Relief from stress and anxiety: A randomized, double-blind, placebo-controlled study on healthy subjects with high stress levels.
    Mishra DN; Kumar M · Heliyon · 2024
    Randomized trial60 participantsStress Relief forAshwagandha
  183. Adaptogenic and Anxiolytic Effects of Ashwagandha Root Extract in Healthy Adults: A Double-blind, Randomized, Placebo-controlled Clinical Study.
    Salve J; Pate S; Debnath K; Langade D · Cureus · 2020
    Randomized trial60 participantsStress Relief forAshwagandha
  184. Effect of standardized root extract of ashwagandha (Withania somnifera) on well-being and sexual performance in adult males: A randomized controlled trial.
    Chauhan S; Srivastava MK; Pathak AK · Health science reports · 2024
    Randomized trial50 participantsTestosterone Support forAshwagandha
  185. Examining the Effects of Herbs on Testosterone Concentrations in Men: A Systematic Review.
    Smith SJ; Lopresti AL; Teo SYM; Fairchild TJ · Advances in nutrition (Bethesda, Md.) · 2021
    Systematic review32 studies pooledTestosterone Support forAshwagandha
  186. Do "testosterone boosters" really increase serum total testosterone? A systematic review.
    Morgado A; Tsampoukas G; Sokolakis I; Schoentgen N; Urkmez A; Sarikaya S · International journal of impotence research · 2024
    Systematic review3 studies pooledTestosterone Support forAshwagandha
  187. Safety and Tolerability of Withania somnifera Root Extract in Healthy Male Participants: A Pilot Randomized, Double-Blind, Placebo-Controlled Clinical Trial.
    Vaidya N; Agarwal R; Kshirsagar P; Ganu G; Nagore D; Mehta A; Vora A; Nair S · Food science & nutrition · 2025
    Randomized trial40 participantsTestosterone Support forAshwagandha
  188. Efficacy of selenium and/or N-acetyl-cysteine for improving semen parameters in infertile men: a double-blind, placebo controlled, randomized study.
    Safarinejad MR; Safarinejad S · The Journal of urology · 2009
    Randomized trial468 participantsTestosterone Support forSelenium
  189. The association between metal exposure and semen quality in Chinese males: The mediating effect of androgens.
    Liu P; Yuan G; Zhou Q; Liu Y; He X; Zhang H; Guo Y; Wen Y; Huang S; Ke Y; Chen J · Environmental pollution (Barking, Essex : 1987) · 2020
    Cross-sectional study1,136 participantsTestosterone Support forSelenium
  190. In utero and peripubertal metals exposure in relation to reproductive hormones and sexual maturation and progression among girls in Mexico City.
    Ashrap P; Sánchez BN; Téllez-Rojo MM; Basu N; Tamayo-Ortiz M; Peterson KE; Meeker JD; Watkins DJ · Environmental research · 2019
    Observational study132 participantsTestosterone Support forSelenium
  191. Relationship between serum levels of testosterone, zinc and selenium in infertile males attending fertility clinic in Nnewi, south east Nigeria.
    Oluboyo AO; Adijeh RU; Onyenekwe CC; Oluboyo BO; Mbaeri TC; Odiegwu CN; Chukwuma GO; Onwuasoanya UF · African journal of medicine and medical sciences · 2013
    Observational studyTestosterone Support forSelenium
  192. EVALUATION OF MALE SEX HORMONES AND TRACE ELEMENTS IN MALE TYPE 2 DIABETIC PATIENTS ATTENDING NNAMDI AZIKIWE UNIVERSITY TEACHING HOSPITAL DIABETIC CLINICS.
    Ubajaka CF; Meludu SC; Dioka CE; Onah CE; Osuji CU; Modebe IA; Ifeadike GC; Okwara JE; Amah UK; Nnebue CC · Nigerian journal of medicine : journal of the National Association of Resident Doctors of Nigeria · 2015
    Cross-sectional studyTestosterone Support forSelenium
  193. Effect of Two Different Doses of Vitamin D Supplementation on Metabolic Profiles of Insulin-Resistant Patients with Polycystic Ovary Syndrome.
    Jamilian M; Foroozanfard F; Rahmani E; Talebi M; Bahmani F; Asemi Z · Nutrients · 2018
    Randomized trial90 participantsTestosterone Support forVitamin D
  194. Androgens and hirsutism score of overweight women with polycystic ovary syndrome improved after vitamin D treatment: A randomized placebo controlled clinical trial.
    Al-Bayyari N; Al-Domi H; Zayed F; Hailat R; Eaton A · Clinical nutrition (Edinburgh, Scotland) · 2021
    Randomized trial60 participantsTestosterone Support forVitamin D
  195. Association between plasma 25-OH vitamin D and testosterone levels in men.
    Nimptsch K; Platz EA; Willett WC; Giovannucci E · Clinical endocrinology · 2012
    Case-control study1,362 participantsTestosterone Support forVitamin D
  196. Causal Link Between Vitamin D and Total Testosterone in Men: A Mendelian Randomization Analysis.
    Chen C; Zhai H; Cheng J; Weng P; Chen Y; Li Q; Wang C; Xia F; Wang N; Lu Y · The Journal of clinical endocrinology and metabolism · 2020
    Other4,254 participantsTestosterone Support forVitamin D
  197. Associations of vitamin D status and vitamin D-related polymorphisms with sex hormones in older men.
    Rafiq R; van Schoor NM; Sohl E; Zillikens MC; Oosterwerff MM; Schaap L; Lips P; de Jongh RT · The Journal of steroid biochemistry and molecular biology · 2017
    Cohort study643 participantsTestosterone Support forVitamin D
  198. Environmental exposure to metals and male reproductive hormones: circulating testosterone is inversely associated with blood molybdenum.
    Meeker JD; Rossano MG; Protas B; Padmanahban V; Diamond MP; Puscheck E; Daly D; Paneth N; Wirth JJ · Fertility and sterility · 2010
    Cross-sectional study219 participantsTestosterone Support forZinc
  199. Nonpharmacological Interventions for the Management of Testosterone and Sperm Parameters: A Scoping Review.
    Santos HO; Cadegiani FA; Forbes SC · Clinical therapeutics · 2022
    Scoping reviewTestosterone Support forZinc
  200. Zinc is an Essential Element for Male Fertility: A Review of Zn Roles in Men's Health, Germination, Sperm Quality, and Fertilization.
    Fallah A; Mohammad-Hasani A; Colagar AH · Journal of reproduction & infertility · 2020
    Narrative reviewTestosterone Support forZinc
  201. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  202. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc