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Clinical Immunity Quick-Start

LifeSeasons
4.6
★ ★ ★ ★ ★
(437 ratings)
Zinc 15 mg
Vitamin C 1000 mg
European Elder 100 mg
Saccharomyces cerevisiae 500 mg
Product Image
Score64
A concentrated, short-course immune formula built around vitamin C, vitamin D3, zinc, and yeast fermentate. The six-capsule serving and incomplete blend disclosure are the main trade-offs.
How scoring works
Quantity:60 Capsule(s) • (10 servings)
Goals:
Immunity
General Health
Anti-Inflammatory Support
Testosterone Support
Hair Health

Score 64

A concentrated, short-course immune formula built around vitamin C, vitamin D3, zinc, and yeast fermentate. The six-capsule serving and incomplete blend disclosure are the main trade-offs.
How scoring works
$29.99($2.99 per serving)
iHerb
$ 29.99
Pure Formulas
$ 29.99
Amazon
$ 29.99
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Analysis

Core nutrients carry most of the formula. PureWay-C vitamin C at 1,000 mg, vitamin D3 at 50 mcg, and zinc gluconate at 15 mg provide clearly disclosed amounts that fit short-term immune-focused use.

Acacia fiber, EpiCor yeast fermentate, elderberry, and Bacillus coagulans broaden the design toward digestive and immune support. Natramune components and the herb blend are less transparent, making their practical contribution difficult to judge.

Six capsules per serving and only a small number of servings make this harder to use as a routine daily supplement. The high vitamin C amount may also be uncomfortable for people with a sensitive stomach.

Who is it for
  • Adults wanting concentrated, short-term immune nutrient support
  • People interested in vitamin C plus yeast fermentate and elderberry
  • Users who do not mind taking several capsules per serving
Best for
  • Short-duration immune routines
  • Combining core nutrients with prebiotic and fermentate ingredients
  • High-dose vitamin C supplementation

Pros

  • Uses a named vitamin C form
  • Provides useful amounts of vitamin D3 and zinc
  • Includes 500 mg EpiCor yeast fermentate
  • Adds elderberry, prebiotic fiber, and a probiotic

Cons

  • Requires six capsules per serving
  • Provides relatively few servings
  • Herb blend contents are not disclosed
  • Natramune components lack clear active-yield details

Warnings

  • Vitamin C at 1,000 mg may cause diarrhea or stomach upset in sensitive users
  • The undisclosed herb blend prevents a full check for ingredient-specific sensitivities
  • Bacillus coagulans may not suit people who have been told to avoid probiotic supplements

Nutrient quality

79 High impact

Advanced vitamin C, vitamin D3, zinc gluconate, yeast fermentate, and elderberry fit intensive immune support. Several blended ingredients cannot be judged fully, and the probiotic lacks a viable-organism count.

Ingredient transparency

58 Moderate impact

The major vitamins, zinc, fiber, fermentate, and elderberry have clear amounts. Natramune components and an herb blend obscure individual doses, while probiotic weight does not show viable organisms.

Customer satisfaction

75 High impact

The strong average rating is supported by a substantial review count. No review excerpts identify tolerance, capsule burden, or repeated complaints, so experience-specific conclusions are not supported.

Value for money

47 Lower impact

Quality core ingredients offer meaningful immune support, but the supply is brief and each serving requires many capsules. Hidden blend details and uncertain probiotic potency further limit confidence in what the premium buys.

Report analysis

Goals

Immunity
Immunity
Impact
Highest effect
A Goal FitB Strength of SupportA- CoverageB- Formula Quality
Vitamin C · 1000 mgZinc · 15 mgVitamin D · 50 mcgEuropean Elder · 100 mg

Vitamin C, vitamin D3, and zinc provide a strong foundational nutrient base for immune function. Acacia fiber, yeast fermentate, elderberry, and a probiotic broaden the immune-focused design.

Two proprietary blends and an undisclosed herbal mixture limit assessment of several secondary ingredients. The large vitamin C amount may cause digestive upset or diarrhea in sensitive users.

Study evidence
Vitamin C Supportive 53 studies
Vitamin D Supportive 85 studies
Zinc Supportive 73 studies
General Health
General Health
Impact
High effect
B Goal FitB Strength of SupportB- CoverageB- Formula Quality
Vitamin D · 50 mcgZinc · 15 mgVitamin C · 1000 mg

The strong vitamin C, vitamin D3, and zinc doses provide meaningful immune and antioxidant support that can contribute to general wellness. The prebiotic fiber and yeast fermentate add broader digestive and immune support, though their value is less established than the core nutrients.

The formula is better suited to short-term immune support than to comprehensive daily nutrition. Large servings and partly opaque blends reduce clarity, while the high vitamin C dose may cause stomach upset or diarrhea in sensitive users.

Study evidence
Vitamin C Supportive 56 studies
Vitamin D Supportive 115 studies
Zinc Supportive 60 studies
Anti-Inflammatory Support
Anti-Inflammatory Support
Impact
High effect
B- Goal FitB Strength of SupportB CoverageB- Formula Quality
Vitamin D · 50 mcgVitamin C · 1000 mg

PureWay-C, vitamin D3, zinc, EpiCor, elderberry, and a probiotic provide broad antioxidant, immune, and gut-support mechanisms. Vitamin C and D3 are supplied at meaningful amounts, while several branded ingredients improve confidence.

The fatty-acid and mushroom components share a Natramune label, and the herb blend hides individual doses, leaving part of the breadth difficult to assess. Six capsules per serving also make the intensive quick-start approach less practical for routine use.

Study evidence
Vitamin C Supportive 50 studies
Vitamin D Supportive 101 studies
Zinc Supportive 64 studies
Testosterone Support
Natural Hormone Production
Testosterone Support
Impact
High effect
B- Goal FitB+ Strength of SupportC CoverageD+ Formula Quality
Zinc · 15 mgVitamin D · 50 mcg

Vitamin D3 and zinc provide a credible nutritional foundation for maintaining normal hormone function. Both amounts are clearly stated and align better with routine support than with correcting an established deficiency.

The remaining ingredients focus on immune and digestive support rather than additional hormone pathways. Proprietary blends also reduce clarity around much of the broader formula.

Study evidence
Vitamin D Supportive 56 studies
Zinc Disputed 7 studies
Hair Health
Healthy Hair Growth CycleScalp Health and Protection
Hair Health
Impact
High effect
C+ Goal FitB+ Strength of SupportC- CoverageD+ Formula Quality
Vitamin D · 50 mcgZinc · 15 mgVitamin C · 1000 mg

The immune formula offers secondary hair support through zinc, vitamin C, and vitamin D3. Zinc is supplied at a maintenance amount and vitamin C supports collagen synthesis.

It lacks iron, biotin, silicon, lysine, or hormonal-pathway actives and carries a six-capsule serving. The extensive immune blends make it poorly focused for hair.

Study evidence
Vitamin C Mixed 5 studies
Zinc Supportive 22 studies
Skin Health
Skin Health
Impact
Moderate effect
C Goal FitB- Strength of SupportC- CoverageF Formula Quality
Zinc · 15 mgVitamin C · 1000 mg

Vitamin C supports collagen synthesis and antioxidant defense, while zinc contributes to repair and barrier function. Both are supplied at meaningful amounts in clearly named forms.

Most remaining ingredients target immune or digestive support rather than skin. Proprietary blends and numerous additions reduce focus, and the formula does not supply a direct structural or hydration active.

Study evidence
Vitamin C Supportive 53 studies
Zinc Supportive 66 studies

Ingredients

IngredientAmount per serving
Vitamin C (PureWay-C)
 1000 mg
Vitamin D3 (Cholecalciferol)
 50 mcg
Zinc (Zinc Gluconate)
 15 mg
Gum Acacia (Acacia seyal) prebiotic fiber
600 mg
EpiCor dried Yeast Fermentate (Saccharomyces cerevisiae)
 500 mg
Natramune (Fatty Acid Complex, Mushroom Hemicellulose)
 500 mg
Herb Blend
250 mg
Black Elderberry 65:1 fruit extract
100 mg
Bacillus coagulans probiotic
11.5 mg
Gluten Free Adults 18–50
Report overview
Zinc (Zinc Gluconate) · 15 mg OverallScore75
B+ Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyF Value

An effective organic zinc salt provides sound absorption for routine use. The 15 mg elemental amount is clear and suitable for maintenance, with no high-dose zinc concern. Serving value is weak if zinc is the main reason for purchase.

View ingredientView products
Vitamin C (PureWay-C) · 1000 mg OverallScore73
B+ Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyF Value

PureWay-C provides an advanced lipid-metabolite Vitamin C form at a preferred 1,000 mg dose. The six-capsule serving and complex blend structure reduce convenience and make the formula less focused. Its very high cost per gram is the main weakness.

View ingredientView products
European Elder · 100 mg OverallScore62
A- Active Ingredient Quality & BioavailabilityC- Dose, Safety & Label TransparencyF Value

The highly concentrated black elderberry fruit extract has strong source identification but provides only a modest actual weight. Exact disclosure prevents the concentration ratio from being mistaken for a larger physical dose. The six-capsule serving is costly for its elderberry content, and the large vitamin C dose may cause stomach upset or diarrhea in sensitive users.

View ingredientView products
Loading alternative details
80 Performance

Reacta C with Black Elderberry

Solaray
<p>A branded vitamin C form and black elderberry extract create a focused formula that aligns closely with the original immune purpose. It omits zinc, vitamin D, and yeast fermentate, but offers a long supply and fewer hidden components.</p>
83 Performance

ACES+Zn

Carlson
<p>Buffered vitamin C, zinc citrate, natural vitamin E, and selenomethionine provide favorable forms and focused antioxidant support. The formula lacks elderberry and yeast fermentate and uses high vitamin E, but its actives are easier to assess than the original blends.</p>
79 Performance

Nordic Immune Daily Defense

Nordic Naturals
<p>Vitamin C, vitamin D3, zinc glycinate, and black elderberry closely match the original immune ingredients with useful disclosed amounts. Missing elderberry standardization and inactive-ingredient details remain limitations, but the formula avoids several hidden blends.</p>
76 Budget

Multivitamin plus 24 HR Immune Support

Sundown
<p>Vitamin C, vitamin D, zinc, and elderberry preserve the original immune-focused core at a much lower serving cost. The botanical amounts are small, but the formula avoids the original product's large capsule burden and hidden herb blend.</p>
79 Budget

Zinc Lozenges Elderberry Flavor

Advanced Nutrition by Zahler
<p>Zinc citrate and gluconate with elderberry provide a focused short-term option at a much lower serving cost. It lacks the original vitamin C, vitamin D, yeast fermentate, and probiotic, while its substantial zinc amount favors limited use.</p>
77 Budget

Vitamin C + D3 & Zinc

NutriBiotic Immunity
<p>Vitamin C, vitamin D, and zinc cover the original product's main micronutrient foundation at a much lower serving cost. Vitamin D exceeds the adult daily upper limit and zinc is high, so routine use is less suitable than the low cost suggests.</p>
74 Value

Vitamin C 1000 mg with Zinc 45 mg

Nutricost
<p>Vitamin C and zinc deliver the main nutrient pairing at a very low serving cost. Zinc exceeds the adult daily upper limit and the formula omits elderberry, vitamin D, and yeast fermentate, so it is mainly a short-term value option.</p>
74 Value

Quercetin Zinc+

DEVA
<p>Zinc and elderberry retain two important parts of the original formula at a low serving cost, while quercetin and echinacea add related immune-focused ingredients. The zinc amount appears excessive for prolonged use and the small copper amount may not fully balance it.</p>
69 Value

Elderberry Immunity Powder Lemon Berry

Trace Minerals
<p>Vitamin C, zinc, and black elderberry provide close collection coverage at a substantially lower serving cost. Conventional forms and an undefined trace-mineral complex reduce refinement, but the formula remains more economical than the original short supply.</p>
Report alternatives

Sources

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

  1. 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
  2. Effect of Vitamin C Supplements on Respiratory Tract Infections: A Systematic Review and Meta-Analysis.
    Keya TA; Leela A; Fernandez K; Habib N; Rashid M · Current reviews in clinical and experimental pharmacology · 2022
    Meta-analysis10 studies pooledImmunity forVitamin C
  3. 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
  4. 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
  5. Intestinal and systemic immune responses to an oral cholera toxoid B subunit whole-cell vaccine administered during zinc supplementation.
    Karlsen TH; Sommerfelt H; Klomstad S; Andersen PK; Strand TA; Ulvik RJ; Ahrén C; Grewal HM · Infection and immunity · 2003
    Randomized trial30 participantsImmunity forZinc
  6. Efficacy of Vitamin C as Glucocorticoid Substitute for Reducing Pain and Inflammation After Total Hip Arthroplasty: A Randomized Controlled Trial.
    Jiang W; Xu H; Jiang X; Zhan Y; Ju Y; Xie J; Huang Z; Huang Q; Pei F · The Journal of bone and joint surgery. American volume · 2025
    Randomized trial107 participantsAnti-Inflammatory Support forVitamin C
  7. The Impact of Vitamin C on Analgesic, Anti-inflammatory, and Hemostatic Outcomes After Total Hip and Knee Arthroplasty: A Systematic Review and Meta-Analysis.
    Moftakhari Hajimirzaei S; Bagherzadeh Cham M; Dolikhani M; Tabatabaee SM; Ebrahimpour A · The archives of bone and joint surgery · 2026
    Meta-analysis1,162 participants10 studies pooledAnti-Inflammatory Support forVitamin C
  8. The impact of vitamin C supplementation on the perioperative outcomes after total hip and knee arthroplasty: a systematic review and meta-analysis.
    Liu X; Guo J; Li Y; Yang Y; Liu M; Gao Q; Yang Y; Wu X; Yue C · BMC musculoskeletal disorders · 2026
    Meta-analysis852 participants8 studies pooledAnti-Inflammatory Support forVitamin C
  9. Therapeutic Impact of Ascorbic Acid on Oral and Periodontal Tissues: A Systematic Literature Review.
    Ruzijevaite G; Acaite E; Jagelaviciene E · Medicina (Kaunas, Lithuania) · 2025
    Systematic review811 participants17 studies pooledAnti-Inflammatory Support forVitamin C
  10. Oral vitamin C administration reduces early recurrence rates after electrical cardioversion of persistent atrial fibrillation and attenuates associated inflammation.
    Korantzopoulos P; Kolettis TM; Kountouris E; Dimitroula V; Karanikis P; Pappa E; Siogas K; Goudevenos JA · International journal of cardiology · 2005
    Randomized trial44 participantsAnti-Inflammatory Support forVitamin C
  11. Vitamin D deficiency and C-reactive protein: a bidirectional Mendelian randomization study.
    Zhou A; Hyppönen E · International journal of epidemiology · 2023
    Observational study294,970 participantsAnti-Inflammatory Support forVitamin D
  12. Vitamin D in Children With Inflammatory Bowel Disease: A Randomized Controlled Clinical Trial.
    El Amrousy D; El Ashry H; Hodeib H; Hassan S · Journal of clinical gastroenterology · 2021
    Randomized trial120 participantsAnti-Inflammatory Support forVitamin D
  13. Vitamin D supplementation reduces infection rate and promotes wound healing in patients with diabetic foot ulcers.
    Gao YQ; Gao YH; Xing JH · World journal of diabetes · 2025
    Randomized trial120 participantsAnti-Inflammatory Support forVitamin D
  14. Associations of C-reactive Protein with 25-hydroxyvitamin D in 24 Specific Diseases: A Cross-sectional Study from NHANES.
    Yang F; Sun M; Sun C; Li J; Yang X; Bi C; Wang M; Pu L; Wang J; Wang C; Xie M; Yao Y; Jin L · Scientific reports · 2020
    Cross-sectional study9,809 participantsAnti-Inflammatory Support forVitamin D
  15. Combined effects of vitamin D deficiency and systemic inflammation on all-cause mortality and cause-specific mortality in older adults.
    Zhang C; Cui J; Li S; Shen J; Luo X; Yao Y; Shi H · BMC geriatrics · 2024
    Cohort study3,072 participantsAnti-Inflammatory Support forVitamin D
  16. Zinc decreases C-reactive protein, lipid peroxidation, and inflammatory cytokines in elderly subjects: a potential implication of zinc as an atheroprotective agent.
    Bao B; Prasad AS; Beck FW; Fitzgerald JT; Snell D; Bao GW; Singh T; Cardozo LJ · The American journal of clinical nutrition · 2010
    Randomized trial40 participantsAnti-Inflammatory Support forZinc
  17. Zinc Supplementation in Individuals with Prediabetes and type 2 Diabetes: a GRADE-Assessed Systematic Review and Dose-Response Meta-analysis.
    Nazari M; Nikbaf-Shandiz M; Pashayee-Khamene F; Bagheri R; Goudarzi K; Hosseinnia NV; Dolatshahi S; Omran HS; Amirani N; Ashtary-Larky D; Asbaghi O; Ghanavati M · Biological trace element research · 2024
    Meta-analysis23 studies pooledAnti-Inflammatory Support forZinc
  18. The Effects of Zinc Supplementation on C-Reactive Protein and Inflammatory Cytokines: A Meta-Analysis and Systematical Review.
    Ceylan MN; Akdas S; Yazihan N · Journal of interferon & cytokine research : the official journal of the International Society for Interferon and Cytokine Research · 2022
    Meta-analysis73 studies pooledAnti-Inflammatory Support forZinc
  19. The Effects of Zinc Sulfate Supplementation on Serum Copeptin, C-Reactive Protein and Metabolic Markers in Zinc-Deficient Diabetic Patients on Hemodialysis: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Hosseini R; Montazerifar F; Shahraki E; Karajibani M; Mokhtari AM; Dashipour AR; Ferns GA; Jalali M · Biological trace element research · 2021
    Randomized trial46 participantsAnti-Inflammatory Support forZinc
  20. Zinc supplementation and cardiovascular disease risk factors: A GRADE-assessed systematic review and dose-response meta-analysis.
    Nazari M; Ashtary-Larky D; Nikbaf-Shandiz M; Goudarzi K; Bagheri R; Dolatshahi S; Omran HS; Amirani N; Ghanavati M; Asbaghi O · Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) · 2023
    Meta-analysis75 studies pooledAnti-Inflammatory Support forZinc
  21. Dietary intake and blood concentrations of antioxidants and the risk of cardiovascular disease, total cancer, and all-cause mortality: a systematic review and dose-response meta-analysis of prospective studies.
    Aune D; Keum N; Giovannucci E; Fadnes LT; Boffetta P; Greenwood DC; Tonstad S; Vatten LJ; Riboli E; Norat T · The American journal of clinical nutrition · 2019
    Meta-analysis69 studies pooledGeneral Health forVitamin C
  22. Scientific Opinion on the substantiation of a health claim related to vitamin C and increasing non haem iron absorption 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 / consensusGeneral Health forVitamin C
  23. Vitamin C Depletion and All-Cause Mortality in Renal Transplant Recipients.
    Sotomayor CG; Eisenga MF; Gomes Neto AW; Ozyilmaz A; Gans ROB; Jong WHA; Zelle DM; Berger SP; Gaillard CAJM; Navis GJ; Bakker SJ · Nutrients · 2018
    Cohort study598 participantsGeneral Health forVitamin C
  24. Associations of Serum Biomarkers of Fruit and Vegetable Intake With the Risk of Cause-Specific Mortality and All-Cause Mortality: A National Prospective Cohort Study.
    Pu L; Zhang R; Wang X; Zhao T; Sun H; Han L · Frontiers in nutrition · 2022
    Cohort study12,530 participantsGeneral Health forVitamin C
  25. Relation between plasma ascorbic acid and mortality in men and women in EPIC-Norfolk prospective study: a prospective population study. European Prospective Investigation into Cancer and Nutrition.
    Khaw KT; Bingham S; Welch A; Luben R; Wareham N; Oakes S; Day N · Lancet (London, England) · 2001
    Cohort study19,496 participantsGeneral Health forVitamin C
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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
  32. 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
  33. 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
  34. 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
  35. 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
  36. 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
  37. 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
  38. 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
  39. 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
  40. 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
  41. 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
  42. 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
  43. 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
  44. 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
  45. 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
  46. 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
  47. 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
  48. 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
  49. 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
  50. 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
  51. 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
  52. 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
  53. 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
  54. 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
  55. 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
  56. 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
  57. 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
  58. 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
  59. 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
  60. 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
  61. 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
  62. 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
  63. 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
  64. 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
  65. 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
  66. 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
  67. 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
  68. 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
  69. 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
  70. 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
  71. 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
  72. 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
  73. 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
  74. 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
  75. 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
  76. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  77. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc