Product Image

Core Daily 1 for Women

Country Life
4.7
★ ★ ★ ★ ★
(3534 ratings)
Phosphorus 102 mg
Manganese 2 mg
Calcium 224 mg
Copper 0.9 mg
Iron 9 mg
Vitamin B5 26 mg
Biotin 300 mcg
Product Image
Score71
Active B vitamins, buffered vitamin C, vitamin D3, iron, and several chelated minerals provide broad women’s nutrition. Repeated source amounts and two hidden blends complicate interpretation of the complete dose profile.
How scoring works
Quantity:60 Tablet(s) • (60 servings)
Goals:
General Health
Immunity
Hair Health
Nail Health

Score 71

Active B vitamins, buffered vitamin C, vitamin D3, iron, and several chelated minerals provide broad women’s nutrition. Repeated source amounts and two hidden blends complicate interpretation of the complete dose profile.
How scoring works
$22.99($0.38 per serving)
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$ 22.99
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$ 22.99
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$ 22.99
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$ 22.99
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Analysis

Active B vitamins, buffered vitamin C, vitamin D3, iron, and several chelated minerals provide broad women’s nutrition. The one-tablet format covers several common micronutrient gaps with good form quality.

Repeated source amounts and two hidden blends complicate interpretation of the complete dose profile. The opaque portions are difficult to assess for meaningful effects or interactions.

It fits women who want an iron-containing once-daily multi with active B forms. People using anticoagulants or avoiding iron need a more tailored option.

Who is it for
  • Women seeking broad once-daily nutrition
  • Users who need supplemental iron
  • People who value active B-vitamin forms
Best for
  • Active B-vitamin coverage
  • Buffered vitamin C and D3
  • One-tablet convenience

Pros

  • Uses active B vitamins
  • Includes buffered vitamin C and vitamin D3
  • Provides several chelated minerals

Cons

  • Two blends hide individual doses
  • Repeated source entries complicate totals
  • Not suitable for users who do not need iron

Warnings

  • Vitamin K intake must remain consistent for people using warfarin and should be reviewed by the prescriber.
  • Iron may cause constipation or stomach discomfort and is unnecessary for many users.
  • Hidden blend components prevent complete allergy and medication screening.

Nutrient quality

81 Highest impact

Active B-vitamin forms, natural vitamin E, magnesium citrate, and several chelated minerals support good quality. Hidden blends and small specialty additions reduce the precision of an otherwise coherent women’s multivitamin.

Ingredient transparency

58 Moderate impact

Most core active amounts are stated, but named blends hide their ingredients or individual doses. Inactive ingredients and complete daily-use directions are also absent.

Customer satisfaction

70 High impact

The average rating is favorable and supported by a large evidence base. No specific feedback is supplied to judge repeated complaints or whether experience matches the intended use.

Value for money

77 High impact

The supply provides reasonable cost efficiency for the active formula. Some additions provide limited value or focus.

Report analysis

Goals

General Health
Daily Energy Vitality
General Health
Impact
High effect
A- Goal FitB- Strength of SupportB+ CoverageB- Formula Quality
Folate · 200 mcg DFEVitamin B12 · 100 mcgVitamin D · 10 mcgMagnesium · 100 mgVitamin K · 81 mcgSelenium · 70 mcgVitamin C · 100 mg

The broad vitamin and mineral profile is directly relevant to daily nutritional maintenance for women. Core vitamins and minerals have established roles, while the women’s and enzyme blends offer less certain contribution.

Many vitamins and trace minerals have useful maintenance amounts, and magnesium is more substantial than in the men’s versions. Active folate and several coenzyme B-vitamin forms are strengths, while mixed magnesium oxide, sodium selenate, K1, and mixed B12 forms limit quality.

Study evidence
Folate Supportive 80 studies
Magnesium Supportive 114 studies
Selenium Supportive 70 studies
Vitamin B12 Adverse 66 studies
Vitamin D Supportive 115 studies
Vitamin K Supportive 34 studies
Immunity
Immunity
Impact
High effect
B+ Goal FitB- Strength of SupportB+ CoverageC Formula Quality
Magnesium · 100 mgVitamin C · 100 mgVitamin A · 750 mcgVitamin D · 10 mcgSelenium · 70 mcg

Several vitamins and minerals support barrier, antioxidant, and immune-cell functions across a broad multivitamin base. The formula is more suitable for maintenance than for intensive immune support.

Many repeated forms and several tiny blends make the label unnecessarily crowded. Olive leaf and the probiotic blend are too small or poorly specified to add reliable immune depth.

Study evidence
Selenium Mixed 37 studies
Vitamin A Supportive 107 studies
Vitamin C Supportive 53 studies
Vitamin D Supportive 85 studies
Vitamin E Supportive 21 studies
Hair Health
Hair Health
Impact
High effect
B+ Goal FitB- Strength of SupportB- CoverageC- Formula Quality
Biotin · 300 mcgVitamin D · 10 mcgIron · 9 mgVitamin C · 100 mg

The women's multivitamin offers useful deficiency-focused support for hair maintenance. Iron, copper, selenium, vitamin D3, vitamin C, methylfolate, mixed B12, and d-biotin cover several follicle needs.

Iron and biotin are moderate, while the formula omits zinc and dedicated structural proteins. It provides nutritional coverage rather than a focused hair-growth strategy.

Study evidence
Biotin Supportive 4 studies
Copper Adverse 4 studies
Iron Disputed 25 studies
Selenium Disputed 7 studies
Vitamin B12 Disputed 17 studies
Vitamin C Mixed 5 studies
Nail Health
Healthy Nail Growth
Nail Health
Impact
Moderate effect
D+ Goal FitD+ Strength of SupportC- CoverageD- Formula Quality
Biotin · 300 mcg

D-biotin, zinc or iron, vitamin C, and B vitamins provide several nutritional cofactors for normal nail growth. The biotin amount is suited to basic nutrition rather than focused support for brittle nails.

Active folate and several organic mineral forms improve quality, but the formula supplies no collagen, cysteine, or quantified silica. Broad health blends and numerous unrelated nutrients make it a general multivitamin rather than a dedicated nail product.

Study evidence
Biotin Supportive 8 studies
Iron Disputed 4 studies
Vitamin C Supportive 1 study

Ingredients

IngredientAmount per serving
Vitamin A (Beta-Carotene)
 750 mcg
Vitamin C (Calcium Ascorbate, Acerola berry extract, Amla extract)
 100 mg
Vitamin D (Vitamin D3)
 10 mcg
Vitamin E (D-Alpha-Tocopheryl Acid Succinate)
 33.5 mg
Vitamin K (Phytonadione)
 81 mcg
Thiamin (Thiamine Cocarboxylase Chloride, Thiamine Hydrochloride)
 5 mg
Riboflavin (Riboflavin 5-Phosphate)
 5 mg
Niacin (Inositol Hexanicotinate)
 20 mg
Vitamin B6 (Pyridoxal 5-Phosphate, Pyridoxine Hydrochloride)
 5 mg
Folate ((6S)-5-Methyltetrahydrofolate-Glucosamine Salt)
 200 mcg DFE
Vitamin B12 (Cyanocobalamin, Methylcobalamin)
 100 mcg
Biotin (D-Biotin)
 300 mcg
Pantothenic Acid (Calcium D-Pantothenate, Pantethine)
 26 mg
Calcium (Calcium Ascorbate, Calcium D-Pantothenate, Calcium Fructoborate, Calcium Hydroxyapatite)
 224 mg
Iron (Ferrous Gluconate)
 9 mg
Phosphorus (Calcium Hydroxyapatite)
 102 mg
Magnesium (Magnesium Citrate, Magnesium Oxide)
 100 mg
Olive leaf extract (Oleuropein)
 5 mg
Selenium (Sodium Selenate)
 70 mcg
Copper (Copper Amino Acid Chelate)
 0.9 mg
Manganese (Manganese Amino Acid Chelate)
 2 mg
Chromium (Chromium Picolinate)
 50 mcg
Molybdenum (Molybdenum Amino Acid Chelate)
 25 mcg
Potassium (Potassium Citrate)
 10 mg
Choline (Choline Bitartrate)
 23 mg
Women's Health Blend
207.5 mg
Inositol (Inositol Hexanicotinate)
 54 mg
Citrus Bioflavonoid Complex (Grapefruit Bioflavonoid, Lemon Bioflavonoid, Orange Bioflavonoid)
 25 mg
Enzyme and Probiotic Blend
5.2 mg
Gluten Free Dairy Free Women 18–50 Vegetarian
Report overview
Phosphorus (Calcium Hydroxyapatite) · 102 mg OverallScore100
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

Calcium hydroxyapatite supplies phosphorus in a bone-like mineral form. The elemental amount sits in a useful targeted range for supplemental support. One tablet per serving combines convenience with favorable value.

View ingredientView products
Manganese (Manganese Amino Acid Chelate) · 2 mg OverallScore90
A+ Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyB+ Value

Manganese amino acid chelate supplies a high-quality chelated form with strong absorption potential. The clearly disclosed 2 mg amount better supports nutritional maintenance than targeted bone-matrix support. A favorable serving cost supports good everyday value.

View ingredientView products
Calcium (Calcium Ascorbate, Calcium D-Pantothenate, Calcium Fructoborate, Calcium Hydroxyapatite) · 224 mg OverallScore89
A+ Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyB+ Value

Calcium hydroxyapatite and fructoborate provide premium forms with strong metabolic utility. The 224 mg serving provides useful supplementation but may require another daily dose for higher needs. Cost per serving offers favorable value.

View ingredientView products
Loading alternative details
70 Performance

PreNatal Nutrients

Pure Encapsulations
<p>Methylfolate, methylcobalamin, iron glycinate, citrate minerals, selenomethionine, and vitamin D3 provide excellent forms for prenatal needs. Folate is very high, choline and magnesium are modest, and the hidden carotenoid blend limits transparency.</p>
78 Performance

Prenatal Multivitamin

NATURELO Premium Supplements
<p>Methylfolate, methylcobalamin, P5P, vitamin D3, vitamin K2, chelated zinc, selenium, and iron create a well-designed prenatal base. Choline remains modest and iron may cause nausea or constipation, so the prenatal positioning should match actual need.</p>
80 Performance

Baby & Me 2 Postnatal Multi

MegaFood
<p>Methylfolate, methylcobalamin, active riboflavin, chelated minerals, choline, iron, and vitamin D3 provide strong postnatal coverage. Choline still falls below lactation needs, and iodine intake may need coordination with thyroid care.</p>
69 Budget

Women's Energy

21st Century Wellify!
<p>A much lower serving cost provides broad vitamins, minerals, and iron for practical women's nutrition. Synthetic vitamin E, oxide minerals, and cyanocobalamin reduce form quality, while the energy claim lacks a distinct active.</p>
75 Budget

Alive! Women's Energy Complete Multivitamin

Nature's Way
<p>A lower serving cost covers common daily vitamin and mineral needs in a practical serving. Several minerals use basic forms and the small produce blend adds little depth, but the formula avoids the original hidden women's blend.</p>
75 Budget

Centrum Men

GSK
<p>A far lower serving cost provides broad everyday vitamins and minerals. Men's positioning and modest calcium, magnesium, iron, and trace minerals make it less suitable for some women, while chemical forms are mostly undisclosed.</p>
73 Value

Core Daily 1 for Men

Country Life
<p>Active B vitamins, vitamin K, natural vitamin E, and chelated trace minerals preserve much of the original formula's form quality at a similar serving cost. Men's positioning, modest calcium and magnesium, and hidden support blends reduce its fit for women.</p>
69 Value

Women's 50+ Multivitamin Multimineral

21st Century Wellify!
<p>A much lower serving cost provides broad daily coverage and substantial calcium for older women. Synthetic vitamin E, oxide minerals, cyanocobalamin, and modest magnesium reduce quality, but the value is strong for general nutrition.</p>
76 Value

Little One

Metabolic Maintenance
<p>Meaningful vitamins and trace minerals come at a serving cost close to the original and provide strong general, immunity, skin, and hair alignment. Child-focused dosing and duplicate vitamin A and B6 entries make it inappropriate as an automatic adult substitute.</p>
Report alternatives

Sources

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

  1. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. Brittle nails: response to daily biotin supplementation.
    Hochman LG; Scher RK; Meyerson MS · Cutis · 1993
    Case series35 participantsNail Health forBiotin
  8. Brittle nails.
    Iorizzo M; Pazzaglia M; M Piraccini B; Tullo S; Tosti A · Journal of cosmetic dermatology · 2009
    Narrative reviewNail Health forBiotin
  9. Intakes of Folate, Vitamin B6, and Vitamin B12 in Relation to All-Cause and Cause-Specific Mortality: A National Population-Based Cohort.
    Bo Y; Xu H; Zhang H; Zhang J; Wan Z; Zhao X; Yu Z · Nutrients · 2022
    Cohort study55,569 participantsGeneral Health forFolate
  10. The responsiveness of plasma homocysteine to small increases in dietary folic acid: a primary care study.
    Schorah CJ; Devitt H; Lucock M; Dowell AC · European journal of clinical nutrition · 1998
    Randomized trial119 participantsGeneral Health forFolate
  11. Associations of Serum Folate and Homocysteine Concentrations with All-Cause, Cardiovascular Disease, and Cancer Mortality in Men and Women in Korea: the Cardiovascular Disease Association Study.
    Song S; Song BM; Park HY · The Journal of nutrition · 2023
    Cohort study21,260 participantsGeneral Health forFolate
  12. The concept of folic acid supplementation and its role in prevention of neural tube defect among pregnant women: PRISMA.
    Seyoum Tola F · Medicine · 2024
    Systematic reviewGeneral Health forFolate
  13. Systematic review of adverse health outcomes associated with high serum or red blood cell folate concentrations.
    Colapinto CK; O'Connor DL; Sampson M; Williams B; Tremblay MS · Journal of public health (Oxford, England) · 2017
    Systematic review71,847 participants46 studies pooledGeneral Health forFolate
  14. Perioperative systemic magnesium to minimize postoperative pain: a meta-analysis of randomized controlled trials.
    De Oliveira GS; Castro-Alves LJ; Khan JH; McCarthy RJ · Anesthesiology · 2013
    Meta-analysis1,257 participants20 studies pooledGeneral Health forMagnesium
  15. Long-term outcome after intravenous magnesium sulphate in suspected acute myocardial infarction: the second Leicester Intravenous Magnesium Intervention Trial (LIMIT-2).
    Woods KL; Fletcher S · Lancet (London, England) · 1994
    Randomized trial2,316 participantsGeneral Health forMagnesium
  16. Association of magnesium sulfate use with mortality in critically ill patients with sepsis: a retrospective propensity score-matched cohort study.
    Gu WJ; Duan XJ; Liu XZ; Cen Y; Tao LY; Lyu J; Yin HY · British journal of anaesthesia · 2023
    Cohort study10,999 participantsGeneral Health forMagnesium
  17. Hypomagnesemia and Mortality in Incident Hemodialysis Patients.
    Li L; Streja E; Rhee CM; Mehrotra R; Soohoo M; Brunelli SM; Kovesdy CP; Kalantar-Zadeh K · American journal of kidney diseases : the official journal of the National Kidney Foundation · 2016
    Cohort study9,359 participantsGeneral Health forMagnesium
  18. The effects of magnesium supplementation on abnormal uterine bleeding, alopecia, quality of life, and acne in women with polycystic ovary syndrome: a randomized clinical trial.
    Jaripur M; Ghasemi-Tehrani H; Askari G; Gholizadeh-Moghaddam M; Clark CCT; Rouhani MH · Reproductive biology and endocrinology : RB&E · 2022
    Randomized trial64 participantsGeneral Health forMagnesium
  19. Associations of selenium status with all-cause and cause-specific mortality: a systematic review and meta-analysis of cohort studies.
    Cui Z; Xie R; Lu X; Schomburg L; Brenner H; Schöttker B · Redox biology · 2025
    Meta-analysis95 participants20 studies pooledGeneral Health forSelenium
  20. Dietary Antioxidants, Circulating Antioxidant Concentrations, Total Antioxidant Capacity, and Risk of All-Cause Mortality: A Systematic Review and Dose-Response Meta-Analysis of Prospective Observational Studies.
    Jayedi A; Rashidy-Pour A; Parohan M; Zargar MS; Shab-Bidar S · Advances in nutrition (Bethesda, Md.) · 2019
    Meta-analysis507,251 participants41 studies pooledGeneral Health forSelenium
  21. The efficacy and safety of selenium supplementation versus placebo in the treatment of Graves' orbitopathy: A systematic review and meta-analysis of randomised controlled trials.
    Sharabati I; Qafesha RM; Hindawi MD; Amro S; Ayesh BM · Clinical endocrinology · 2024
    Meta-analysis4 studies pooledGeneral Health forSelenium
  22. Associations of plasma metal concentrations with the risks of all-cause and cardiovascular disease mortality in Chinese adults.
    Shi L; Yuan Y; Xiao Y; Long P; Li W; Yu Y; Liu Y; Liu K; Wang H; Zhou L; Yang H; Li X; He M; Wu T · Environment international · 2021
    Cohort study6,155 participantsGeneral Health forSelenium
  23. Updates on clinical studies of selenium supplementation in radiotherapy.
    Puspitasari IM; Abdulah R; Yamazaki C; Kameo S; Nakano T; Koyama H · Radiation oncology (London, England) · 2015
    Systematic review16 studies pooledGeneral Health forSelenium
  24. Oral Vitamin B12 versus Placebo for the Prevention of Chemotherapy-Induced Peripheral Neuropathy in Gynecological Cancer Patients: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Insin P; Chaiwongsa T; Prueksaritanond N · Asian Pacific journal of cancer prevention : APJCP · 2026
    Randomized trial40 participantsGeneral Health forVitamin B12
  25. Vitamin B12 Supplementation in Diabetic Neuropathy: A 1-Year, Randomized, Double-Blind, Placebo-Controlled Trial.
    Didangelos T; Karlafti E; Kotzakioulafi E; Margariti E; Giannoulaki P; Batanis G; Tesfaye S; Kantartzis K · Nutrients · 2021
    Randomized trial90 participantsGeneral Health forVitamin B12
  26. A single-center randomized controlled trial of local methylcobalamin injection for subacute herpetic neuralgia.
    Xu G; Lv ZW; Feng Y; Tang WZ; Xu GX · Pain medicine (Malden, Mass.) · 2014
    Randomized trial98 participantsGeneral Health forVitamin B12
  27. Local Injection of Methylcobalamin Combined with Lidocaine for Acute Herpetic Neuralgia.
    Xǔ G; Xu S; Tang WZ; Xú G; Cheng C; Xu J · Pain medicine (Malden, Mass.) · 2017
    Randomized trial204 participantsGeneral Health forVitamin B12
  28. The Effect of Vitamin B12 and Folic Acid Supplementation on Serum Homocysteine, Anemia Status and Quality of Life of Patients with Multiple Sclerosis.
    Nozari E; Ghavamzadeh S; Razazian N · Clinical nutrition research · 2022
    Clinical trial50 participantsGeneral Health forVitamin B12
  29. 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
  30. 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
  31. 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
  32. 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
  33. 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
  34. Dietary vitamin K intake associates with reduced all-cause mortality in non-alcoholic fatty liver disease patients.
    Huang Y; Zhu X; Han L; Hu H · Scientific reports · 2025
    Cohort study7,857 participantsGeneral Health forVitamin K
  35. Vitamin K status, cardiovascular disease, and all-cause mortality: a participant-level meta-analysis of 3 US cohorts.
    Shea MK; Barger K; Booth SL; Matuszek G; Cushman M; Benjamin EJ; Kritchevsky SB; Weiner DE · The American journal of clinical nutrition · 2020
    Meta-analysis3,891 participants3 studies pooledGeneral Health forVitamin K
  36. The Effect of Topical Vitamin K1 on the Treatment of Cetuximab-Induced Skin Rashes in Metastatic Colorectal Cancer Patients.
    Roayaei M; Rezaei M; Najafizade N · Advanced biomedical research · 2024
    Randomized trial49 participantsGeneral Health forVitamin K
  37. Effect of vitamin K on improving post‑kidney transplant outcomes: a meta‑analysis.
    Sun Z; Zhu K; Liang G; Yan F; Chao S; Jia L; Niu Y · Experimental and therapeutic medicine · 2023
    Meta-analysis7 studies pooledGeneral Health forVitamin K
  38. Vitamin K1 intake is associated with lower risk for all-cause and cardiovascular disease mortality in community-dwelling older Australian women.
    Dupuy M; Radavelli-Bagatini S; Zhong L; Dalla Via J; Zhu K; Blekkenhorst LC; Bondonno NP; Linneberg A; Bellinge JW; Schultz C; Courtney W; Prince RL; Hodgson JM; Lewis JR; Sim M · Nutrition, metabolism, and cardiovascular diseases : NMCD · 2024
    Cohort study1,436 participantsGeneral Health forVitamin K
  39. Menkes disease and response to copper histidine: An Indian case series.
    Yoganathan S; Sudhakar SV; Arunachal G; Thomas M; Subramanian A; George R; Danda S · Annals of Indian Academy of Neurology · 2022
    Case series4 participantsHair Health forCopper
  40. Trace element levels in alopecia areata.
    Bhat YJ; Manzoor S; Khan AR; Qayoom S · Indian journal of dermatology, venereology and leprology · 2009
    Case-control study100 participantsHair Health forCopper
  41. UV damage to hair and the effect of antioxidants and metal chelators.
    Millington KR; Marsh JM · International journal of cosmetic science · 2021
    In vitro / ex vivo studyHair Health forCopper
  42. Preserving fibre health: reducing oxidative stress throughout the life of the hair fibre.
    Marsh JM; Davis MG; Lucas RL; Reilman R; Styczynski PB; Li C; Mamak M; McComb DW; Williams RE; Godfrey S; Navqi KR; Chechik V · International journal of cosmetic science · 2016
    In vitro / ex vivo studyHair Health forCopper
  43. 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
  44. 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
  45. 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
  46. 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
  47. 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
  48. Beyond Efficacy: 0.6% Selenium Disulfide Shampoo Matches 2% Ketoconazole for Seborrheic Dermatitis with Superior Cosmesis.
    Farris PK; Barbosa V; Houshman EB; Kovylkina N · Journal of drugs in dermatology : JDD · 2026
    Randomized trial87 participantsHair Health forSelenium
  49. Selenium Disulfide-based shampoo applied for 4 weeks significantly improves dandruff and seborrheic dermatitis.
    Turcu G; Artenie C; Nowicka D; Arenbergerová M; Lazaridou E; Khobzei K; Ataseven A; Part M; Leclerc-Mercier S · European journal of dermatology : EJD · 2023
    Observational study1,407 participantsHair Health forSelenium
  50. A Comparative Randomized Clinical Study Assessing the Efficacy of a 1% Selenium Disulfide-Based Shampoo versus 2% Ketoconazole Shampoo in Subjects with Moderate to Severe Scalp Seborrheic Dermatitis.
    Barbosa V; Melo DF; Vañó-Galván S; Lutchmanen-Kolanthan V; Sant'Anna B; Leclerc-Mercier S; Reygagne P · Skin appendage disorders · 2025
    Randomized trial64 participantsHair Health forSelenium
  51. Changes of serum trace elements level in patients with alopecia areata: A meta-analysis.
    Jin W; Zheng H; Shan B; Wu Y · The Journal of dermatology · 2018
    Meta-analysis764 participantsHair Health forSelenium
  52. Scientific opinion on the tolerable upper intake level for selenium.
    EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA); Turck D; Bohn T; Castenmiller J; de Henauw S; Hirsch-Ernst KI; Knutsen HK; Maciuk A; Mangelsdorf I; McArdle HJ; Peláez C; Pentieva K; Siani A; Thies F; Tsabouri S; Vinceti M; Aggett P; Crous Bou M; Cubadda F; Ciccolallo L; de Sesmaisons Lecarré A; Fabiani L; Titz A; Naska A · EFSA journal. European Food Safety Authority · 2023
    Systematic reviewHair Health forSelenium
  53. 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 forVitamin B12
  54. Factors Associated with Premature Hair Graying in a Young Indian Population.
    Chakrabarty S; Krishnappa PG; Gowda DG; Hiremath J · International journal of trichology · 2016
    Case-control study74 participantsHair Health forVitamin B12
  55. Risk Factors for Pediatric Alopecia Areata: Clinical and Biochemical Findings from a Case - Control Study.
    İritaş SY · Dermatology practical & conceptual · 2026
    Case-control study600 participantsHair Health forVitamin B12
  56. Hair Loss After Laparoscopic Sleeve Gastrectomy.
    Katsogridaki G; Tzovaras G; Sioka E; Perivoliotis K; Zachari E; Magouliotis D; Tasiopoulou V; Chatedaki C; Zacharoulis D · Obesity surgery · 2019
    Cohort study50 participantsHair Health forVitamin B12
  57. Demographic Characteristics and Association of Serum Vitamin B12, Ferritin and Thyroid Function with Premature Canities in Indian Patients from an Urban Skin Clinic of North India: A Retrospective Analysis of 71 Cases.
    Sonthalia S; Priya A; Tobin DJ · Indian journal of dermatology · 2022
    Cross-sectional study71 participantsHair Health forVitamin B12
  58. 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
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    Ba Y; Shen L; Peng X; Zhang Y; Wang J · Medicine · 2024
    Methods validation study201,019 participantsHair Health forVitamin C
  60. 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
  61. 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
  62. 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
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    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
  64. 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
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    Yu SY; Li WG; Zhu YJ; Yu WP; Hou C · Biological trace element research · 1990
    Non-randomized trial20,847 participantsImmunity forSelenium
  66. 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
  67. 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
  68. 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
  69. 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
  70. 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
  71. 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
  72. 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
  73. 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
  74. 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
  75. 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
  76. 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
  77. 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
  78. 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
  79. 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
  80. 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
  81. 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
  82. 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
  83. Vitamin E supplementation enhances cell-mediated immunity in healthy elderly subjects.
    Meydani SN; Barklund MP; Liu S; Meydani M; Miller RA; Cannon JG; Morrow FD; Rocklin R; Blumberg JB · The American journal of clinical nutrition · 1990
    Randomized trial32 participantsImmunity forVitamin E
  84. Immunomodulatory effects of palm-derived tocotrienol-rich fraction in healthy volunteers following influenza vaccination: A randomised clinical trial.
    Chen S; Ahmad B; Palanisamy UD; Hafid SRA; Selvaduray KR; Radhakrishnan AK · Nutrition research (New York, N.Y.) · 2026
    Randomized trial150 participantsImmunity forVitamin E
  85. Effects of supplementation with tocotrienol-rich fraction on immune response to tetanus toxoid immunization in normal healthy volunteers.
    Mahalingam D; Radhakrishnan AK; Amom Z; Ibrahim N; Nesaretnam K · European journal of clinical nutrition · 2011
    Randomized trialImmunity forVitamin E
  86. Vitamin E and beta-carotene supplementation and hospital-treated pneumonia incidence in male smokers.
    Hemilä H; Virtamo J; Albanes D; Kaprio J · Chest · 2004
    Randomized trial29,133 participantsImmunity forVitamin E
  87. Vitamin E supplementation and in vivo immune response in healthy elderly subjects. A randomized controlled trial.
    Meydani SN; Meydani M; Blumberg JB; Leka LS; Siber G; Loszewski R; Thompson C; Pedrosa MC; Diamond RD; Stollar BD · JAMA · 1997
    Randomized trial88 participantsImmunity forVitamin E
  88. 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
  89. Vitamins and minerals: their role in nail health and disease.
    Scheinfeld N; Dahdah MJ; Scher R · Journal of drugs in dermatology : JDD · 2007
    Narrative reviewNail Health forBiotin Nail Health forIron
  90. A pilot iron substitution programme in female blood donors with iron deficiency without anaemia.
    Pittori C; Buser A; Gasser UE; Sigle J; Job S; Rüesch M; Tichelli A; Infanti L · Vox sanguinis · 2011
    Non-randomized trial224 participantsNail Health forIron
  91. Evaluation of nail abnormalities.
    Tully AS; Trayes KP; Studdiford JS · American family physician · 2013
    Narrative reviewNail Health forIron
  92. Efficacy and tolerability of a biomineral formulation for treatment of onychoschizia: a randomized trial
    Adele Sparavigna, Beatrice Tenconi, Laura La Penna · Clinical, Cosmetic and Investigational Dermatology · 2019
    Randomized trial48 participantsNail Health forIron
  93. Vitamin C Deficiency in Inflammatory Bowel Disease: The Forgotten Micronutrient.
    Dunleavy KA; Ungaro RC; Manning L; Gold S; Novak J; Colombel JF · Crohn's & colitis 360 · 2023
    Other20 participantsNail Health forVitamin C