Product Image

Ferodrox

Kaged Muscle
4.5
★ ★ ★ ★ ★
(756 ratings)
Ashwagandha 600 mg
Zinc 30 mg
Shilajit 200 mg
Product Image
Score79
A transparent, well-dosed testosterone and stress formula has strong branded actives, with copper balance and interaction concerns requiring careful use.
How scoring works
Quantity:60 Capsule(s) • (30 servings)
Goals:
Testosterone Support
Muscle Gain
Productivity Boost
Fitness
Stress Relief
General Health
Energy
Hair Health

Score 79

A transparent, well-dosed testosterone and stress formula has strong branded actives, with copper balance and interaction concerns requiring careful use.
How scoring works
$49.99($1.66 per serving)
Amazon
$ 49.99
iHerb
$ 49.99
iHerb
$ 49.99
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Analysis

The formula provides substantial KSM-66 ashwagandha, L-OptiZinc, LJ100 tongkat ali, PrimaVie shilajit, DIM, and BioPerine with clear amounts. That branded, focused combination gives it more formulation depth for testosterone and stress-related performance than a generic mineral blend.

Ashwagandha supports stress resilience, while tongkat ali, zinc, shilajit, and DIM address distinct hormone-related angles. The formula is much less convincing for vision, skin, sleep, cognition, or weight gain because it lacks direct actives for those goals.

The zinc amount is high for long-term daily use and no copper is included, so total intake and balance deserve attention. BioPerine may alter medicine exposure, while ashwagandha has specific pregnancy, thyroid, autoimmune, liver, drowsiness, and stomach-tolerance considerations.

Who is it for
  • Adult men seeking a focused testosterone-support stack
  • Users wanting branded ashwagandha, tongkat ali, and shilajit
  • People prioritizing stress and training support
Best for
  • Testosterone-support routines
  • Stress resilience
  • Training and vitality support

Pros

  • Substantial KSM-66 dose
  • Uses branded L-OptiZinc
  • Includes LJ100 and PrimaVie
  • All major active amounts are disclosed

Cons

  • No copper alongside high zinc
  • Weak fit for many listed secondary goals
  • BioPerine adds interaction potential
  • Not suited to users needing sport-certified products

Warnings

  • Regular long-term use of the high zinc amount without copper can impair copper balance; account for zinc and copper from the full diet and supplement routine.
  • Ashwagandha warrants caution during pregnancy and with thyroid, autoimmune, or liver concerns, and it may cause drowsiness or stomach upset.
  • BioPerine can alter the handling of some medicines, so review specific prescriptions before combining them.

Nutrient quality

83 Highest impact

Branded forms and substantial amounts create a strong performance-focused formula. The copper-free zinc amount and interaction potential prevent an unqualified safety result.

.

Ingredient transparency

87 Highest impact

All active amounts are individually disclosed and no proprietary blend hides the main doses. The inactive-ingredient list and full marker details for some branded extracts are not supplied.

.

Customer satisfaction

69 High impact

The supplied average rating is strong and backed by a large review pool. No review text is available to assess repeated complaints or firsthand performance experiences.

.

Value for money

75 High impact

Strong branded actives and meaningful amounts support good formula value. The moderate serving cost is reasonable but not unusually low within the category.

.
Report analysis

Goals

Testosterone Support
Testosterone Support
Impact
Highest effect
A Goal FitA Strength of SupportA CoverageA Formula Quality
Zinc · 30 mgAshwagandha · 600 mg

Ferodrox is strongly aligned with Testosterone Support because its highlighted actives include KSM-66 at 600 mg, L-OptiZinc at 30 mg, LJ100 tongkat ali at 200 mg, PrimaVie shilajit at 200 mg, and diindolylmethane at 120 mg; evidence for the formula as a whole is good.

Customer feedback averages 4.46 out of 5 across 751 reviews; ashwagandha warrants caution during pregnancy and with thyroid, liver, or interacting-medication concerns; total daily zinc intake should be considered against the adult 40 mg upper limit and copper balance.

Study evidence
Ashwagandha Supportive 17 studies
Zinc Disputed 7 studies
Muscle Gain
Muscle Gain
Impact
Highest effect
B+ Goal FitA+ Strength of SupportB CoverageB+ Formula Quality

Ferodrox aligns with Muscle Gain mainly through Zinc and Ashwagandha, while the supplied collection analyses average 83.9 and supplied customer feedback is 4.46 from 751 reviews.

Its strongest feature is dose adequacy, while the main limitation is that no supplement replaces a varied diet; it appears better suited to a targeted role within a broader routine.

Study evidence
Ashwagandha Supportive 10 studies
Zinc Supportive 12 studies
Productivity Boost
Productivity Boost
Impact
Highest effect
B+ Goal FitA+ Strength of SupportB CoverageB+ Formula Quality
Zinc · 30 mg

Ferodrox aligns with Productivity Boost mainly through Ashwagandha and Zinc, while the supplied collection analyses average 83.9 and supplied customer feedback is 4.46 from 751 reviews.

Its strongest feature is dose adequacy, while the main limitation is that no supplement replaces a varied diet; it appears better suited to a targeted role within a broader routine.

Study evidence
Ashwagandha Supportive 6 studies
Zinc Supportive 11 studies
Fitness
Fitness
Impact
Highest effect
B+ Goal FitA Strength of SupportB CoverageB Formula Quality
Ashwagandha · 600 mg

Ferodrox combines 600 mg KSM-66, 30 mg L-OptiZinc, LJ100, PrimaVie, DIM, and BioPerine, giving it broader recovery and training-adaptation relevance than a basic ashwagandha capsule.

Supplied feedback averages 4.46 from 751 reviews and the current brand page reports favorable reviews, but Kaged states the testosterone-support formula is not eligible for its usual third-party sport-certification programs.

Study evidence
Ashwagandha Supportive 23 studies
Zinc Supportive 7 studies
Stress Relief
Stress Relief
Impact
Highest effect
B+ Goal FitA+ Strength of SupportB- CoverageB Formula Quality
Ashwagandha · 600 mg

Kaged Muscle Ferodrox has a supplied customer average of 4.46 from 751 reviews, and prior research notes that this testosterone-oriented product is not eligible for the brand’s usual sport-certification programs.

The transparent 600 mg KSM-66 dose is a strong stress-support anchor, while ashwagandha can cause drowsiness or stomach upset and warrants caution during pregnancy and with relevant thyroid, autoimmune, liver, or medication concerns, and 30 mg zinc without copper deserves attention with regular long-term use.

Study evidence
Ashwagandha Supportive 47 studies
Zinc Supportive 9 studies
General Health
General Health
Impact
High effect
B Goal FitA Strength of SupportC+ CoverageB Formula Quality
Ashwagandha · 600 mgZinc · 30 mg

Ferodrox supplies a clinically familiar 600 mg KSM-66 ashwagandha dose and 30 mg branded L-OptiZinc, supported by a supplied 4.46 average from 751 reviews.

The formula is well disclosed and focused, but its testosterone-oriented ingredients are narrower than comprehensive general health, and long-term use merits attention to the absence of copper, ashwagandha cautions, and BioPerine-related medication interactions.

Study evidence
Ashwagandha Supportive 31 studies
Zinc Supportive 60 studies

Ingredients

IngredientAmount per serving
OptiZinc
30 mg
KSM-66 (Ashwagandha Root Extract)
 600 mg
LJ100 Eurycoma longifolia root extract (Eurypeptides, Glycosaponins)
 200 mg
PrimaVie (Shilajit Fulvic Acid Complex)
 200 mg
3,3 Diindolylmethane
120 mg
BioPerine (Piper nigrum)
 10 mg
Adults 18–50
Report overview
Ashwagandha (Ashwagandha Root Extract) · 600 mg OverallScore89
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD Value
+5

Ferodrox discloses 600 mg ashwagandha per serving and has a 4.46 average from 751 reviews. The product has 751 reviews averaging 4.46, while the multi-ingredient performance formula and black pepper enhancer warrant medication-interaction review.

View ingredientView products
Zinc · 30 mg OverallScore79
A+ Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyF Value
+6

Ferodrox supplies 30 mg zinc as L-OptiZinc zinc mono-L-methionine, with customer feedback of 4.46 stars from 751 reviews in the supplied rollup, while the current Kaged page shows 4.68 from 518 reviews. the current Kaged page confirms 30 mg L-OptiZinc and a transparent formula, and 30 mg zinc sits in the preferred range but no copper is included, and the brand notes that testosterone-support products are not eligible for its usual sport-certification programs.

View ingredientView products
Loading alternative details
72 Performance

Male Vitality+

Advanced Nutrition by Zahler
Active B vitamins, acetyl-L-carnitine, CoQ10, branded ashwagandha, shilajit, zinc, and selenium broaden energy and male-vitality support. High vitamin E and copper-free zinc narrow suitability for long-term use, and the serving value is weaker.
67 Performance

For Him Testosterone & Libido Boost

Bluebonnet Intimate Essentials
Branded tongkat ali, zinc citrate, and clearly described boron forms maintain strong testosterone and libido alignment with a different supporting profile. Several botanicals are modest, and prolonged zinc without copper may impair copper status.
82 Performance

Thyroid Energy

NOW
Clearly specified minerals, meaningful tyrosine, standardized guggul, and ashwagandha provide a coherent, transparent energy-support formula. It is more thyroid-focused and less aligned with muscle or testosterone goals, and thyroid-related interactions limit broad use.
67 Budget

For Him Testosterone & Libido Boost

Bluebonnet Intimate Essentials
Zinc citrate, multi-form boron, branded tongkat ali, and supporting botanicals retain male-performance alignment at lower cost. Shilajit and several other actives are modest or incompletely standardized, and zinc is not balanced with copper.
81 Budget

Ortho Thyroid

Protocol For Life Balance
Well-specified minerals, tyrosine, standardized guggul, and ashwagandha offer an inexpensive route to energy and general endocrine support. Testosterone alignment is weaker than the original, and thyroid conditions or medicines require careful professional guidance.
54 Budget

Calm Now

ZHOU
Ashwagandha, standardized rhodiola, bacopa, and B vitamins provide a much less costly option when stress and energy are the main priorities. Oxide minerals and a hidden botanical blend reduce quality, while testosterone support is limited.
82 Value

Thyroid Energy

NOW
Well-specified minerals, tyrosine, standardized guggul, and ashwagandha provide strong ingredient quality at markedly better value. The formula trades the original’s testosterone focus for thyroid-related energy support and requires added caution with thyroid conditions or medicines.
81 Value

Ortho Thyroid

Protocol For Life Balance
Tyrosine, iodine, zinc, selenium, standardized guggul, and ashwagandha create a transparent active core at a low serving cost. Goal fit is narrower for testosterone support, so the value is strongest for users prioritizing thyroid-related energy.
67 Value

For Him Testosterone & Libido Boost

Bluebonnet Intimate Essentials
Zinc citrate, branded tongkat ali, and multiple boron forms preserve much of the male-performance intent with modestly better serving value. Secondary ingredients are not consistently well standardized, and the zinc-to-copper balance remains a concern.
Report alternatives

Sources

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

  1. 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
  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. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. Efficacy of Zinc Supplement in Minimal hepatic Encephalopathy: A prospective, Randomized Controlled Study (Zinc-MHE Trial).
    Janyajirawong R; Vilaichone RK; Sethasine S · Asian Pacific journal of cancer prevention : APJCP · 2021
    Randomized trial69 participantsBrain Health Cognitive Support forZinc
  12. A preliminary report: effects of zinc and micronutrient repletion on growth and neuropsychological function of urban Chinese children.
    Penland JG; Sandstead HH; Alcock NW; Dayal HH; Chen XC; Li JS; Zhao F; Yang JJ · Journal of the American College of Nutrition · 1997
    Randomized trial372 participantsBrain Health Cognitive Support forZinc
  13. Association between zinc deficiency and cognitive decline in community-dwelling older adults.
    Marchetti MF; Silva GMD; Freiria CN; Borim FSA; Brito TRP; Milanski M; Corona LP · Ciencia & saude coletiva · 2022
    Cross-sectional study591 participantsBrain Health forZinc
  14. Zinc status, psychological and nutritional assessment in old people recruited in five European countries: Zincage study.
    Marcellini F; Giuli C; Papa R; Gagliardi C; Dedoussis G; Herbein G; Fulop T; Monti D; Rink L; Jajte J; Mocchegiani E · Biogerontology · 2007
    Cross-sectional study853 participantsBrain Health forZinc
  15. Zinc alleviates stroke development through autophagy-mediated modulation of immune microenvironment.
    Qiu Z; Liu X; Li J; Yin H; Luo J; Lin Z; Rexiati M; Abulaiti A; Yasen A; Xing L; Aili D; Meng B; Li X; You Z; He J; Huang C; Qian Z; Chen J · Frontiers in immunology · 2025
    OtherBrain Health forZinc
  16. 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
  17. 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
  18. Effects of zinc supplementation on parent and teacher behaviour rating scores in low socioeconomic level Turkish primary school children.
    Uçkardeş Y; Ozmert EN; Unal F; Yurdakök K · Acta paediatrica (Oslo, Norway : 1992) · 2009
    Randomized trial226 participantsCognitive Support forZinc
  19. L-shaped association between dietary zinc intake and cognitive decline in Chinese older people.
    Meng Q; Liu M; Zu C; Su X; Wei Y; Gan X; Zhang Y; He P; Zhou C; Ye Z; Liu C; Qin X · Age and ageing · 2024
    Cohort study3,106 participantsCognitive Support forZinc
  20. The efficacy of zinc augmentation in children with attention deficit hyperactivity disorder under treatment with methylphenidate: A randomized controlled trial.
    Noorazar SG; Malek A; Aghaei SM; Yasamineh N; Kalejahi P · Asian journal of psychiatry · 2021
    Randomized trial60 participantsCognitive Support forZinc
  21. 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
  22. 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
  23. Enhancing healthspan with Ashwagandha (Withania somnifera): a comprehensive review of its multifaceted geroprotective benefits.
    Vittal M; Vinciguerra M · Biogerontology · 2025
    Narrative reviewEnergy forAshwagandha
  24. 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
  25. 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 Weight Gain forAshwagandha
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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
  32. [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
  33. 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
  34. 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
  35. 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
  36. 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
  37. 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
  38. 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
  39. 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
  40. 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
  41. 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
  42. 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
  43. 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
  44. 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
  45. 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
  46. 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
  47. 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
  48. 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
  49. 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
  50. 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
  51. 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
  52. 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
  53. 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
  54. 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
  55. 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
  56. 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
  57. 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 participantsMood Support Stress Relief forAshwagandha
  58. 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
  59. 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
  60. 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
  61. 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 Weight Gain forAshwagandha
  62. 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
  63. 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
  64. 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
  65. 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
  66. 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
  67. Zinc supplementation improved cognitive performance and taste acuity in Indian adolescent girls.
    Tupe RP; Chiplonkar SA · Journal of the American College of Nutrition · 2010
    Randomized trial180 participantsProductivity Boost forZinc
  68. Effects of Physical Activity and Micronutrients on Cognitive Performance in Children Aged 6 to 11 Years: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Meli AM; Ali A; Mhd Jalil AM; Mohd Yusof H; Tan MMC · Medicina (Kaunas, Lithuania) · 2022
    Meta-analysisProductivity Boost forZinc
  69. Linkages of biomarkers of zinc with cognitive performance and taste acuity in adolescent girls.
    Chiplonkar SA; Kawade R · International journal of food sciences and nutrition · 2015
    Cross-sectional study403 participantsProductivity Boost forZinc
  70. Associations Between Serum Selenium, Zinc, and Copper Levels and Cognitive Function in the Elderly.
    Charernwat P; Chansirikarnjana S; Panpunuan P; Sritara P; Sirivarasai J · Nutrients · 2025
    Cross-sectional study854 participantsProductivity Boost forZinc
  71. Comparative analysis of methyl-donor nutrient intakes and RCPM cognitive performance among school-aged children.
    Apprey C; Asamoah-Boakye O; Annaful VT; Annan RA · Clinical nutrition ESPEN · 2022
    Cross-sectional study2,073 participantsProductivity Boost forZinc
  72. 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
  73. 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
  74. 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
  75. 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
  76. 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 forZinc
  77. 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
  78. 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
  79. 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
  80. 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
  81. 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
  82. 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
  83. 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
  84. 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
  85. 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
  86. Investigating the effect of zinc supplementation on probability of relapse and mental health in patients with opioid use disorder undergoing methadone maintenance treatment.
    Amini Z; HeidariFarsani E · Substance abuse treatment, prevention, and policy · 2023
    Randomized trial68 participantsStress Relief forZinc
  87. A systematic review of the association between zinc and anxiety.
    Azargoonjahromi A · Nutrition reviews · 2024
    Systematic review9 studies pooledStress Relief forZinc
  88. Zinc acutely and temporarily inhibits adrenal cortisol secretion in humans. A preliminary report.
    Brandão-Neto J; de Mendonça BB; Shuhama T; Marchini JS; Pimenta WP; Tornero MT · Biological trace element research · 1991
    Clinical trial27 participantsStress Relief forZinc
  89. Low Zinc, Copper, and Manganese Intake is Associated with Depression and Anxiety Symptoms in the Japanese Working Population: Findings from the Eating Habit and Well-Being Study.
    Nakamura M; Miura A; Nagahata T; Shibata Y; Okada E; Ojima T · Nutrients · 2019
    Cross-sectional study2,089 participantsStress Relief forZinc
  90. Mediation effects of thyroid hormones in the associations between essential metal elements and anxiety or depression symptoms in the elderly.
    Li J; Wang W; Peng Y; Qin N; Li J; Wei Y; Wang B; Zeng H; Li H; Cheng L · Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2026
    Observational study416 participantsStress Relief forZinc
  91. 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
  92. 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
  93. 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
  94. 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
  95. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  96. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  97. Effects of Zinc Supplementation on Anthropometric Indices and Adipokines in Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Salmani M; Karimi M; Asbaghi O; Bagheri R; Nikbaf-Shandiz M; Bakhtiary F; Goudarzi K; Kazemi K; Shouhani Z; Setayesh L; Haghighat N; Ashtary-Larky D · Biological trace element research · 2026
    Meta-analysis41 studies pooledWeight Gain forZinc
  98. Efficacy of combined iron and zinc supplementation on micronutrient status and growth in Vietnamese infants.
    Berger J; Ninh NX; Khan NC; Nhien NV; Lien DK; Trung NQ; Khoi HH · European journal of clinical nutrition · 2006
    Randomized trial915 participantsWeight Gain forZinc
  99. Effect of enteral zinc supplementation on growth and neurodevelopment of preterm infants: a systematic review and meta-analysis.
    Alshaikh B; Abo Zeed M; Yusuf K; Guin M; Fenton T · Journal of perinatology : official journal of the California Perinatal Association · 2022
    Meta-analysis742 participants8 studies pooledWeight Gain forZinc
  100. The effect of zinc supplementation on pregnancy outcome.
    Goldenberg RL; Tamura T; Neggers Y; Copper RL; Johnston KE; DuBard MB; Hauth JC · JAMA · 1995
    Randomized trial580 participantsWeight Gain forZinc
  101. Zinc supplements in breastfed infants.
    Walravens PA; Chakar A; Mokni R; Denise J; Lemonnier D · Lancet (London, England) · 1992
    Randomized trial57 participantsWeight Gain forZinc