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One Daily Women's

Equate
4.7
★ ★ ★ ★ ★
(7343 ratings)
Iodine 150 mcg
Biotin 1000 mcg
Calcium 380 mg
Iron 18 mg
Copper 0.9 mg
Product Image
Score77
Broad coverage and 200 one-tablet servings provide strong budget value. Missing forms, calcium–iron competition, and the need to confirm iron suitability are the main limitations.
How scoring works
Quantity:200 Tablet(s) • (200 servings)
Goals:
Immunity
Energy
Hair Health
Productivity Boost

Score 77

Broad coverage and 200 one-tablet servings provide strong budget value. Missing forms, calcium–iron competition, and the need to confirm iron suitability are the main limitations.
How scoring works
$8.83($0.04 per serving)
Walmart
$ 8.83
Report prices

Analysis

The tablet covers the major vitamins and includes 18 mg iron, 380 mg calcium, 150 mcg iodine, zinc, selenium, copper, manganese, and chromium. A 200-serving bottle makes the formula unusually economical and easy to maintain.

Most chemical forms are not disclosed, so absorption and tolerance cannot be judged closely. Supplying a meaningful calcium amount in the same tablet as iron may also reduce how much iron is absorbed.

The broad profile is most useful as a basic nutritional backstop, with hair, skin, energy, and immunity relevance tied to filling actual gaps. People who do not need iron should choose an iron-free formula rather than accept it for the low price.

Who is it for
  • Women seeking a low-cost daily multivitamin
  • People with an actual need for supplemental iron
  • Users who value one-tablet convenience
Best for
  • Budget women’s micronutrient coverage
  • Long-supply daily use
  • Iron and iodine intake

Pros

  • Provides broad vitamin and mineral coverage
  • Includes 18 mg iron and 150 mcg iodine
  • Uses a single-tablet serving
  • Offers 200 servings at very low cost

Cons

  • Most nutrient forms are not disclosed
  • Calcium may reduce iron absorption
  • Iron is unnecessary for many adults
  • The formula is basic rather than targeted

Warnings

  • The 18 mg iron amount may cause nausea or constipation and should be avoided by people advised to limit iron.
  • Vitamin K can conflict with warfarin dosing; users taking warfarin should keep intake consistent and follow clinical guidance.
  • The 1,000 mcg biotin amount can interfere with some laboratory tests, so disclose use before testing.

Nutrient quality

76 High impact

The vitamins and minerals are generally present at practical daily amounts, including iron and calcium. No listed amount is clearly excessive, although iron is unnecessary for users without increased iron needs.

Ingredient transparency

71 High impact

Every listed active has a specific amount. No proprietary blend hides a listed active dose.

Customer satisfaction

73 High impact

The strong rating is supported by a very large review base. No review text is available to assess recurring complaints or firsthand results.

Value for money

93 Highest impact

Basic forms are proportionate to the very low cost. The very long bottle life provides exceptional serving value.

Report analysis

Goals

Immunity
Immunity
Impact
High effect
A- Goal FitC Strength of SupportB+ CoverageA- Formula Quality
Vitamin C · 75 mgZinc · 8 mgVitamin A · 700 mcgVitamin D · 25 mcgSelenium · 27.5 mcg

Vitamin A, vitamin C, vitamin D3, zinc, and selenium provide broad maintenance support for immune barriers and cell function. Several immune-focused amounts are modest, making the formula better suited to nutritional coverage than acute support.

The multivitamin also addresses many nonimmune nutrient needs in a practical once-daily format. Undisclosed mineral forms and the relatively light selenium and zinc contributions limit immune-specific confidence.

Study evidence
Selenium Mixed 37 studies
Vitamin A Supportive 107 studies
Vitamin C Supportive 53 studies
Vitamin D Supportive 85 studies
Zinc Supportive 73 studies
Energy
Energy
Impact
High effect
A- Goal FitC+ Strength of SupportB CoverageB Formula Quality
Iodine · 150 mcgVitamin D · 25 mcgVitamin B5 · 5 mgRiboflavin · 1.3 mgThiamin · 1.2 mgVitamin B12 · 6 mcgIron · 18 mg

B vitamins support fuel metabolism, while iron supports oxygen transport when iron status is low. The broad multivitamin can therefore address common nutritional causes of low energy, especially in women with higher iron needs.

Most amounts are useful for maintenance, but the B12 amount is far below the goal's higher functional threshold and many ingredient forms are not disclosed. Supplemental iron should match an actual need because unnecessary iron can cause digestive effects and is not an energy booster for iron-replete users.

Study evidence
Iron Supportive 74 studies
Hair Health
Hair Health
Impact
High effect
B- Goal FitB Strength of SupportB- CoverageB Formula Quality
Biotin · 1000 mcgVitamin D · 25 mcgZinc · 8 mgIron · 18 mgVitamin C · 75 mg

The formula supplies several nutrients that can matter when deficiency affects hair. It is primarily a broad nutritional product rather than a targeted hair intervention.

Iron, vitamin D, zinc, biotin, and folate cover several deficiency-related hair pathways. The balanced amounts are useful when needs exist, though the formula remains a general multivitamin.

Study evidence
Biotin Supportive 4 studies
Folate Mixed 15 studies
Iron Disputed 25 studies
Vitamin D Disputed 34 studies
Zinc Supportive 22 studies
Productivity Boost
Productivity Boost
Impact
High effect
B Goal FitB- Strength of SupportC+ CoverageC Formula Quality
Iron · 18 mgVitamin B12 · 6 mcgVitamin B12 · 6 mcgVitamin B6 · 1.7 mgZinc · 8 mg

Iron, B vitamins, and other nutrients may improve fatigue and brain fog when a dietary deficiency is present. The broad multivitamin is unlikely to sharpen focus or sustained attention in someone with adequate nutrient status.

The iron amount is meaningful, but its chemical form is not stated and substantial calcium may reduce absorption. The 1000 mcg biotin amount can interfere with some thyroid, hormone, and cardiac laboratory tests, so users should disclose it before testing.

Study evidence
Iron Supportive 69 studies
Nail Health
Nail Health
Impact
Moderate effect
C+ Goal FitC- Strength of SupportB- CoverageC- Formula Quality
Biotin · 1000 mcg

Biotin, zinc, iron, B vitamins, and vitamin C can support nails when nutritional gaps are present. The formula is a broad multivitamin rather than a targeted structural nail product.

The 1,000 mcg biotin amount is modest, and most nutrient forms are not identified. Broad deficiency coverage is useful, but missing collagen, keratin, and silicon limits direct nail-plate support.

Study evidence
Biotin Supportive 8 studies
Iron Disputed 4 studies
Vitamin C Supportive 1 study
Zinc No effect 1 study

Ingredients

IngredientAmount per serving
Vitamin A (Beta-Carotene)
 700 mcg
Vitamin C
75 mg
Vitamin D3
25 mcg
Vitamin E
7.5 mg
Vitamin K
25 mcg
Thiamine
1.2 mg
Riboflavin
1.3 mg
Niacin
16 mg
Vitamin B6
1.7 mg
Folate
680 mcg DFE
Vitamin B12
6 mcg
Biotin
1000 mcg
Pantothenic Acid
5 mg
Calcium
380 mg
Iron
18 mg
Iodine
150 mcg
Zinc
8 mg
Selenium
27.5 mcg
Copper
0.9 mg
Manganese
1.8 mg
Chromium
25 mcg
Gluten Free Women 18–50
Report overview
Iodine · 150 mcg OverallScore75
F Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

The iodine amount is stated, but its undisclosed source limits confidence in bioavailability and purity. The elemental amount is well aligned with routine thyroid maintenance and remains within the safe daily range. The very low serving cost creates excellent iodine-specific value.

View ingredientView products
Biotin · 1000 mcg OverallScore70
B- Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyB+ Value

The clearly disclosed biotin amount provides a modest dose rather than the high-potency level often chosen for targeted hair and nail support. A standard tablet format is practical, though the label does not identify the biologically active biotin isomer. Low daily cost and a broad set of vitamins and minerals make the formula economical for general supplementation.

View ingredientView products
Calcium · 380 mg OverallScore65
F Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyA+ Value
The clearly listed 380 mg calcium amount is useful for general supplementation, though some users may need calcium from other sources to meet higher needs. The label data does not identify the calcium form, leaving its absorption potential uncertain. Its very low cost per serving makes it an economical multivitamin source of calcium.
View ingredientView products
Loading alternative details
88 Performance

Prenatal

Fairhaven Health
<p>Methylfolate, methylcobalamin, iodine, and clearly identified iron provide stronger forms and better transparency than the original’s largely unspecified ingredients. Its prenatal focus and substantial iron require an appropriate life-stage need, but ingredient quality is meaningfully higher.</p>
80 Performance

Mighty Mini

Advanced Nutrition by Zahler
<p>Methylfolate, methylcobalamin, MK-7, active vitamin B6, and chelated iron improve on the original’s conventional or unspecified forms. The split label presentation is cumbersome, but the formula supplies a more sophisticated nutrient profile.</p>
79 Performance

Prenatal Multi

Nature Made
<p>Folate, iron, iodine, vitamin D3, and a broad vitamin base provide more specialized nutrient coverage than the original’s general formula. Calcium and magnesium remain modest and meaningful choline is absent, but the core prenatal nutrients are clearly stated.</p>
83 Budget

600 + D3 plus Minerals

21st Century
<p>Calcium carbonate, vitamin D3, magnesium, zinc, copper, and manganese provide focused bone support at the same supplied serving cost. No eligible candidate is documented as strictly cheaper, so this is a closest-cost alternative rather than a true price reduction.</p>
79 Budget

Women's Complete Multivitamin

Bayer One A Day Women's
<p>Broad vitamins, iron, iodine, and vitamin D closely mirror the original’s everyday nutrient pattern. Its supplied serving cost is higher rather than lower, but it is one of the closest affordable eligible substitutes from a different brand.</p>
73 Budget

Children's Chewable Complete Multivitamin

Equate
<p>Broad vitamins, iron, calcium, iodine, and zinc come at a similarly low serving cost. It is not strictly cheaper and its children’s dosing limits interchangeability, but the disclosed amounts make it a practical low-cost option when age appropriate.</p>
79 Value

Prenatal Folic Acid

Nature Made
<p>A broad vitamin base with folate, iron, iodine, and vitamin D3 provides substantial coverage in a long, economical supply. Its prenatal focus adds value for that life stage, though calcium, magnesium, choline, and omega-three coverage remain limited.</p>
75 Value

Women's Petites

Bayer One A Day Women's
<p>Broad nutrients with iron maintain similar everyday coverage in a smaller-tablet format and at an economical serving cost. Missing chemical forms reduce quality confidence, but the format and nutrient range can offer better practical value.</p>
76 Value

Caltrate Bone Health Advanced 600+D3

Caltrate
<p>Calcium and vitamin D3 provide stronger targeted bone support, with zinc, copper, magnesium, and manganese adding useful breadth. Economical servings support value for that goal, though it does not replace a complete multivitamin and its chemical forms are not disclosed.</p>
Report alternatives

Sources

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

  1. Effect of iron therapy on fatigue symptoms in non-anaemic iron deficient women of reproductive age- A Randomized Controlled Trial.
    Sultana N; Bajwa FA; Sikandar MZ; Haider MM; Majeed T · JPMA. The Journal of the Pakistan Medical Association · 2026
    Randomized trial164 participantsEnergy forIron
  2. The Effect of Parenteral or Oral Iron Supplementation on Fatigue, Sleep, Quality of Life and Restless Legs Syndrome in Iron-Deficient Blood Donors: A Secondary Analysis of the IronWoMan RCT.
    Macher S; Herster C; Holter M; Moritz M; Matzhold EM; Stojakovic T; Pieber TR; Schlenke P; Drexler C; Amrein K · Nutrients · 2021
    Randomized trial176 participantsEnergy forIron
  3. Clinical evaluation of iron treatment efficiency among non-anemic but iron-deficient female blood donors: a randomized controlled trial.
    Waldvogel S; Pedrazzini B; Vaucher P; Bize R; Cornuz J; Tissot JD; Favrat B · BMC medicine · 2012
    Randomized trial154 participantsEnergy forIron
  4. Intravenous iron for the treatment of fatigue in nonanemic, premenopausal women with low serum ferritin concentration.
    Krayenbuehl PA; Battegay E; Breymann C; Furrer J; Schulthess G · Blood · 2011
    Randomized trial90 participantsEnergy forIron
  5. Large-dose intravenous ferric carboxymaltose injection for iron deficiency anemia in heavy uterine bleeding: a randomized, controlled trial.
    Van Wyck DB; Mangione A; Morrison J; Hadley PE; Jehle JA; Goodnough LT · Transfusion · 2010
    Randomized trial477 participantsEnergy forIron
  6. Ferric carboxymaltose vs. oral iron in the treatment of pregnant women with iron deficiency anemia: an international, open-label, randomized controlled trial (FER-ASAP).
    Breymann C; Milman N; Mezzacasa A; Bernard R; Dudenhausen J; FER-ASAP investigators · Journal of perinatal medicine · 2018
    Randomized trial252 participantsEnergy forIron
  7. Intravenous iron isomaltoside treatment of women suffering from severe fatigue after postpartum hemorrhage.
    Holm C; Thomsen LL; Langhoff-Roos J · The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2019
    Randomized trial85 participantsEnergy forIron
  8. The Role of Sesbania grandiflora-Derived Biotin and Bambusa arundinacea-Derived Silica Extracts in Promoting Hair, Skin, and Nail Health: A Randomized, Double-Blind, Placebo-Controlled Clinical Study.
    Patel MN; Maheshvari J; Patel N · Cureus · 2025
    Randomized trial105 participantsHair Health Nail Health forBiotin
  9. Low serum biotinidase activity in children with valproic acid monotherapy.
    Schulpis KH; Karikas GA; Tjamouranis J; Regoutas S; Tsakiris S · Epilepsia · 2001
    Clinical trial125 participantsHair Health forBiotin
  10. Vitamins A, B, C, and D: A Short Review for the Dermatologist.
    Coerdt KM; Goggins CA; Khachemoune A · Alternative therapies in health and medicine · 2021
    Narrative reviewHair Health forBiotin
  11. The Infatuation With Biotin Supplementation: Is There Truth Behind Its Rising Popularity? A Comparative Analysis of Clinical Efficacy versus Social Popularity.
    Soleymani T; Lo Sicco K; Shapiro J · Journal of drugs in dermatology : JDD · 2018
    Narrative reviewHair Health forBiotin
  12. Hair Loss After Metabolic and Bariatric Surgery: a Systematic Review and Meta-analysis.
    Zhang W; Fan M; Wang C; Mahawar K; Parmar C; Chen W; Yang W; Global Bariatric Research Collaborative · Obesity surgery · 2021
    Meta-analysis2,538 participants18 studies pooledHair Health forFolate
  13. Quantitative Analysis of Selected Circulating Hematological Biomarkers, Essential Minerals, Vitamins, and Thyroid Hormones in Females Affected by Hair Loss.
    Al-Fawaeir S; Al-Odat I · Diseases (Basel, Switzerland) · 2025
    Case-control study200 participantsHair Health forFolate
  14. Twelve weeks of protracted venous infusion of fluorouracil (5-FU) is as effective as 6 months of bolus 5-FU and folinic acid as adjuvant treatment in colorectal cancer.
    Saini A; Norman AR; Cunningham D; Chau I; Hill M; Tait D; Hickish T; Iveson T; Lofts F; Jodrell D; Ross PJ; Oates J · British journal of cancer · 2003
    Randomized trialHair Health forFolate
  15. Role of oxaliplatin combined with 5-fluorouracil and folinic acid in the first- and second-line treatment of advanced colorectal cancer.
    Jonker D; Rumble RB; Maroun J; Gastrointestinal Cancer Disease Site Groupof Cancer Care Ontario’s Program in Evidence-Based Care · Current oncology (Toronto, Ont.) · 2012
    Randomized trialHair Health forFolate
  16. Phase I-II study of vinorelbine in combination with 5-fluorouracil and folinic acid as first-line chemotherapy in metastatic breast cancer: a regimen with a low subjective toxic burden.
    Nolè F; de Braud F; Aapro M; Minchella I; De Pas TM; Zampino MG; Monti S; Andreoni G; Goldhirsch A · Annals of oncology : official journal of the European Society for Medical Oncology · 1997
    Randomized trialHair Health forFolate
  17. The Association Between Alopecia Areata and Iron Deficiency Anemia: A Large-Scale Population-Based Case-Control Study.
    Davidovici B; Drutin Y; Ben-Tov A; Mimouni D; Wohl Y · Journal of personalized medicine · 2026
    Case-control study100,203 participantsHair Health forIron
  18. Iron Deficiency and Nonscarring Alopecia in Women: Systematic Review and Meta-Analysis.
    Treister-Goltzman Y; Yarza S; Peleg R · Skin appendage disorders · 2022
    Meta-analysis10,029 participants36 studies pooledHair Health forIron
  19. Comparative Analysis of Postoperative Hair Loss and Micronutrient Deficiencies After One-Anastomosis Gastric Bypass Versus Sleeve Gastrectomy.
    Chinisaz F; Maleki T; Najjari K; Miratashi Yazdi SA · Obesity surgery · 2026
    Cohort study261 participantsHair Health forIron
  20. Assessment of Serum Ferritin Levels in Female Patients With Telogen Effluvium.
    Thamotharan N; Harikumar MV; Sundaram M; Swaminathan A; Rangarajan S · Cureus · 2026
    Cross-sectional study100 participantsHair Health forIron
  21. Diagnosis and treatment of female alopecia: Focusing on the iron deficiency-related alopecia.
    Lin CS; Chan LY; Wang JH; Chang CH · Tzu chi medical journal · 2023
    Cohort study155 participantsHair Health forIron
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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
  32. 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
  33. 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
  34. 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
  35. 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
  36. 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
  37. 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
  38. 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
  39. 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
  40. 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
  41. 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
  42. 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
  43. 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
  44. 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
  45. 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
  46. 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
  47. 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
  48. 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
  49. 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
  50. 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
  51. 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
  52. 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
  53. 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
  54. 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
  55. 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
  56. 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
  57. Biotin for the treatment of nail disease: what is the evidence?
    Lipner SR; Scher RK · The Journal of dermatological treatment · 2018
    Narrative reviewNail Health forBiotin
  58. Treatment of brittle fingernails and onychoschizia with biotin: scanning electron microscopy.
    Colombo VE; Gerber F; Bronhofer M; Floersheim GL · Journal of the American Academy of Dermatology · 1991
    Other32 participantsNail Health forBiotin
  59. Treatment of brittle nail with a hydroxypropyl chitosan-based lacquer, alone or in combination with oral biotin: A randomized, assessor-blinded trial.
    Chiavetta A; Mazzurco S; Secolo MP; Tomarchio G; Milani M · Dermatologic therapy · 2020
    Randomized trial50 participantsNail Health forBiotin
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