Product Image

Centrum Silver Adults 50+

Centrum
4.9
★ ★ ★ ★ ★
(74 ratings)
Vitamin A 2500 IU
Iodine 150 mcg
Calcium 220 mg
Chloride 72 mg
Manganese 2.3 mg
Vitamin D 1000 IU
Folate 400 mcg
Product Image
Score72
A convenient, iron-free one-tablet multivitamin with broad baseline coverage for older adults. Weak form disclosure and partial mineral amounts keep it from being a complete solution.
How scoring works
Quantity:325 Tablet(s) • (325 servings)
Goals:
General Health
Immunity
Energy
Testosterone Support

Score 72

A convenient, iron-free one-tablet multivitamin with broad baseline coverage for older adults. Weak form disclosure and partial mineral amounts keep it from being a complete solution.
How scoring works
$29.80($0.09 per serving)
Walmart
$ 29.80
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Analysis

The tablet covers most core vitamins and trace minerals in a simple once-daily format. Its iron-free design suits many older adults, while vitamin D, zinc, iodine, folate, B12, and vitamin C provide useful baseline coverage.

Most nutrient forms are not named, so absorption quality cannot be compared with more transparent formulas. Calcium and magnesium are well below full daily needs, and lutein and lycopene are too small for focused vision support.

The large bottle and one-tablet routine make this a practical long-term nutritional safety net. It should not be treated as a replacement for targeted bone, mineral, or eye-health supplementation when those needs are established.

Who is it for
  • Adults over fifty seeking broad basic coverage
  • People who do not need supplemental iron
  • Users who value a long-supply one-tablet routine
Best for
  • General daily nutrition
  • Iron-free multivitamin use
  • Convenient long-term coverage

Pros

  • Covers most essential vitamins and trace minerals
  • One-tablet serving is simple
  • Includes vitamin D, zinc, iodine, and B12
  • Avoids iron for users who do not need it
  • Large supply supports regular use

Cons

  • Most nutrient forms are undisclosed
  • Calcium and magnesium coverage is incomplete
  • Potassium amount is modest
  • Lutein and lycopene are lightly dosed
  • Not suitable for correcting major deficiencies

Warnings

  • Vitamin K can interfere with warfarin-type anticoagulants and requires consistent clinician-guided intake.
  • Iodine may require review for people with thyroid disease or those using thyroid medication.
  • Calcium can reduce absorption of levothyroxine and tetracycline-class antibiotics when taken together, so doses may need separation.

Nutrient quality

66 High impact

The broad iron-free profile supplies practical daily coverage with generally restrained amounts. Missing forms and modest mineral and carotenoid doses limit quality.

.

Ingredient transparency

72 High impact

Active amounts are clear and no proprietary blend is shown. Most nutrient forms, complete use directions, and non-active ingredients are missing.

.

Customer satisfaction

65 High impact

The supplied average is very strong, and the rating count is limited. Specific firsthand feedback is absent, so repeated complaints and purpose fit cannot be assessed.

.

Value for money

85 Highest impact

The low serving cost supports strong value for broad daily coverage. Ordinary forms and a few weak amounts keep it from being exceptional.

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Report analysis

Goals

General Health
General Health
Impact
Highest effect
A Goal FitB- Strength of SupportA- CoverageB+ Formula Quality
Folate · 400 mcgVitamin B12 · 25 mcgVitamin D · 1000 IUMagnesium · 50 mgVitamin K · 30 mcgSelenium · 19 mcgZinc · 11 mgVitamin C · 60 mg

A broad vitamin and mineral panel supports common nutritional gaps for older adults. Vitamin D, zinc, iodine, B vitamins, and antioxidant nutrients create useful everyday coverage.

Several ingredient forms are not specified, folate is supplied as folic acid, and magnesium and selenium are modest. Tiny amounts of lutein, lycopene, silicon, nickel, and vanadium add label breadth without much functional depth.

Study evidence
Folate Supportive 80 studies
Magnesium Supportive 114 studies
Selenium Supportive 70 studies
Vitamin D Supportive 115 studies
Zinc Supportive 60 studies
Immunity
Immunity
Impact
High effect
B+ Goal FitC+ Strength of SupportB+ CoverageB+ Formula Quality
Magnesium · 50 mgVitamin C · 60 mgZinc · 11 mgVitamin A · 2500 IUVitamin D · 1000 IUSelenium · 19 mcg

A broad multivitamin base supplies vitamins A, C, and D plus zinc and selenium for several immune functions. The formula is designed for general nutrient coverage in older adults rather than concentrated immune support.

Vitamin D and zinc are useful, while vitamin C and selenium remain modest compared with targeted immune formulas. The broad nutrient list is mostly purposeful, with only a few low-dose accessory compounds.

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
Essential Energy Nutrients
Energy
Impact
Moderate effect
B- Goal FitD Strength of SupportC CoverageB+ Formula Quality
Iodine · 150 mcgVitamin D · 1000 IUVitamin B5 · 10 mgMagnesium · 50 mgRiboflavin · 1.7 mgThiamin · 1.5 mgVitamin B12 · 25 mcgPotassium · 80 mg

B vitamins, iodine, and Vitamin D support basic metabolic and thyroid-related energy functions. The amounts are suited to daily nutritional maintenance rather than focused fatigue support.

Magnesium and B12 remain below the stated energy targets, and most nutrient forms are not disclosed. The broad multivitamin covers general nutrition but offers no acute alertness or stress-resilience mechanism.

Study evidence
Iodine Adverse 3 studies
Magnesium Supportive 4 studies
Vitamin D Supportive 32 studies
Testosterone Support
Testosterone Support
Impact
Moderate effect
C- Goal FitD Strength of SupportD CoverageD+ Formula Quality
Magnesium · 50 mgZinc · 11 mgVitamin D · 1000 IU

Vitamin D, zinc, magnesium, and selenium provide basic nutritional support related to hormone production. The amounts are mostly conservative and the multivitamin is not designed for targeted testosterone support.

Vitamin D and zinc contribute maintenance-level coverage, while magnesium and selenium are low. Missing chemical forms for several minerals and extensive general nutrition content reduce precision.

Study evidence
Magnesium Disputed 5 studies
Selenium No effect 16 studies
Vitamin D Supportive 56 studies
Zinc Disputed 7 studies

Ingredients

IngredientAmount per serving
Vitamin A (Beta-Carotene)
 2500 IU
Vitamin C
60 mg
Vitamin D
1000 IU
Vitamin E
50 IU
Vitamin K
30 mcg
Thiamine
1.5 mg
Riboflavin
1.7 mg
Niacin
20 mg
Vitamin B6
3 mg
Folic Acid
400 mcg
Vitamin B12
25 mcg
Biotin
30 mcg
Pantothenic Acid
10 mg
Calcium
220 mg
Phosphorus
20 mg
Iodine
150 mcg
Magnesium
50 mg
Zinc
11 mg
Selenium
19 mcg
Copper
0.5 mg
Manganese
2.3 mg
Chromium
50 mcg
Molybdenum
45 mcg
Chloride
72 mg
Potassium
80 mg
Nickel
5 mcg
Silicon
2 mg
Vanadium
10 mcg
Lutein
250 mcg
Lycopene
300 mcg
Gluten Free Seniors 50+
Report overview
Vitamin A (Beta-Carotene) · 2500 IU OverallScore76
D+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value

A well-targeted 2,500 IU beta-carotene dose fits a daily multivitamin. The source is not identified as natural, and the dry tablet depends on dietary fat for absorption. Low serving cost supports good vitamin A value alongside the many added nutrients.

View ingredientView products
Iodine · 150 mcg OverallScore75
F Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

The iodine amount is stated, but the missing compound and source prevent a confident assessment of absorption and purity. The broad, high-mineral tablet is less streamlined than a dedicated iodine product. Per-serving value is especially favorable for the iodine delivered.

View ingredientView products
Chloride · 72 mg OverallScore56
F Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyA+ Value

The specific chloride source salt is not disclosed, and the 72 mg amount provides a moderate general-wellness amount. The tablet uses conventional delivery, while the label states the dose without naming a specific salt. Cost efficiency is exceptional for the chloride delivered.

View ingredientView products
Loading alternative details
55 Performance

Enzyme Nutrition Multi-Vitamin Two Daily

Enzymedica
Vitamin D3, natural mixed vitamin E, beta-carotene, and broad vitamin coverage improve several ingredient forms. Unquantified enzymes, probiotics, ATP, and botanicals weaken transparency and the formula is not specifically designed for older adults.
78 Performance

Children's Chewable

Thompson
Vitamin D3, natural-form vitamin E, and clearly named minerals provide better ingredient detail than the original mostly unspecified profile. Child-oriented doses make it unsuitable as a direct senior replacement, but the disclosed forms are stronger when age fit is appropriate.
75 Performance

Multi Adult Gummies

Nature Made
Broad adult vitamin coverage offers a simple, convenient alternative with clearly listed amounts. Minerals are sparse and several forms are conventional, so it is easier to take but less complete for mature-adult nutrition.
71 Budget

Norwegian Cod Liver Oil 1000 mg Fresh Orange Flavor

AN Amazing Nutrition Amazing Omega
Vitamin D3, natural vitamin E, and vitamin A provide focused fat-soluble nutrient support at lower serving cost. It does not replace the original broad multivitamin coverage, and missing DHA and EPA amounts plus preformed vitamin A require care.
75 Budget

Centrum Silver Adults 50+

GSK
A closely matched senior formula provides broad maintenance coverage and a long supply at slightly lower serving cost. Chemical forms remain mostly undisclosed, but the like-for-like nutrient pattern makes the transition straightforward.
73 Budget

Centrum Silver Adults 50+

GSK
Broad one-tablet senior coverage offers a nearly identical goal and favorable everyday economy. Missing chemical forms and an apparent vitamin D unit anomaly should be resolved on the current label before use.
68 Value

Norwegian Cod Liver Oil 1000 mg Fresh Lemon Flavor

AN Amazing Nutrition Amazing Omega
Vitamin D3, natural vitamin E, and vitamin A provide low-cost support for a narrower set of fat-soluble nutrients. It lacks broad multivitamin coverage and quantified DHA or EPA, so its value applies only when those specific nutrients are the goal.
68 Value

Men's Daily Adult Gummy

Equate
A basic adult gummy supplies several vitamins, iodine, and selenium at accessible serving value. It omits many minerals and is not senior-specific, while incomplete gummy-base disclosure limits a full comparison.
72 Value

Flintstones Gummies + Immunity Support

Bayer
Vitamin C, vitamin D, and zinc provide a concise, economical immune-oriented gummy. The child-focused format and limited nutrient breadth prevent it from replacing a full senior multivitamin, but the central active amounts are practical.
Report alternatives

Sources

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

  1. Association of radioactive iodine treatment with survivorship symptoms and primary care utilisation in women of reproductive age with thyroid cancer: a retrospective cohort study.
    Devanarayan P; Hartman M; Partin M · Family medicine and community health · 2026
    Cohort study10,882 participantsEnergy forIodine
  2. Energy level and fatigue after surgery for thyroid cancer: A population-based study of patient-reported outcomes.
    Hughes DT; Reyes-Gastelum D; Kovatch KJ; Hamilton AS; Ward KC; Haymart MR · Surgery · 2020
    Cohort study2,584 participantsEnergy forIodine
  3. Health-Related Quality of Life in Differentiated Thyroid Cancer Survivors: A Cross-Sectional Study From Turkey.
    Gültekin A; Kahraman MY; Şengöz T; Şimşek FS · Head & neck · 2026
    Cross-sectional study202 participantsEnergy forIodine
  4. Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: A randomized controlled trial.
    Hausenblas HA; Lynch T; Hooper S; Shrestha A; Rosendale D; Gu J · Sleep medicine: X · 2025
    Randomized trial80 participantsEnergy forMagnesium
  5. Total magnesium intake and risk of frailty in older women.
    Struijk EA; Fung TT; Bischoff-Ferrari HA; Willett WC; Lopez-Garcia E · Journal of cachexia, sarcopenia and muscle · 2024
    Cohort study81,524 participantsEnergy forMagnesium
  6. Red blood cell magnesium and chronic fatigue syndrome.
    Cox IM; Campbell MJ; Dowson D · Lancet (London, England) · 1991
    Randomized trial32 participantsEnergy forMagnesium
  7. Exercise, magnesium and immune function.
    Laires MJ; Monteiro C · Magnesium research · 2008
    Narrative reviewEnergy forMagnesium
  8. Effect of Vitamin D Supplementation on Fatigue in Multiple Sclerosis: A Systematic Review and Meta-Analysis.
    López-Muñoz P; Torres-Costoso AI; Fernández-Rodríguez R; Guzmán-Pavón MJ; de Arenas-Arroyo SN; Basco-López JÁ; Reina-Gutiérrez S · Nutrients · 2023
    Meta-analysis345 participants5 studies pooledEnergy forVitamin D
  9. Vitamin D Supplementation in Adolescents and Young Adults With Juvenile Systemic Lupus Erythematosus for Improvement in Disease Activity and Fatigue Scores: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Lima GL; Paupitz J; Aikawa NE; Takayama L; Bonfa E; Pereira RM · Arthritis care & research · 2016
    Randomized trial40 participantsEnergy forVitamin D
  10. Vitamin D in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome After COVID-19 or Vaccination: A Randomized Controlled Trial.
    Kodama S; Nakata M; Konishi N; Yoshino M; Fujisawa A; Naganuma M; Kobayashi Y; Hirai Y; Kitagawa A; Miyokawa M; Mishima R; Teramukai S; Fukushima M · Nutrients · 2026
    Randomized trial91 participantsEnergy forVitamin D
  11. The effects of vitamin D supplementation on disease activity and fatigue in Libyan rheumatoid arthritis patients.
    Elfituri S · Reumatologia · 2024
    Randomized trial68 participantsEnergy forVitamin D
  12. The effect of home-based aerobic training and vitamin D supplementation on fatigue and quality of life in patients with multiple sclerosis during COVID-19 outbreak.
    Bahmani E; Hoseini R; Amiri E · Science & sports · 2022
    Randomized trial40 participantsEnergy forVitamin D
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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
  32. 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
  33. 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
  34. 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
  35. 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
  36. 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
  37. 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
  38. 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
  39. 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
  40. 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
  41. 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
  42. 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
  43. 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
  44. 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
  45. 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
  46. 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
  47. 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
  48. 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
  49. 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
  50. 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
  51. 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
  52. 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
  53. 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
  54. 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
  55. 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
  56. 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
  57. 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
  58. 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
  59. 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
  60. 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
  61. 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
  62. 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
  63. Magnesium and anabolic hormones in older men.
    Maggio M; Ceda GP; Lauretani F; Cattabiani C; Avantaggiato E; Morganti S; Ablondi F; Bandinelli S; Dominguez LJ; Barbagallo M; Paolisso G; Semba RD; Ferrucci L · International journal of andrology · 2012
    Cohort study399 participantsTestosterone Support forMagnesium
  64. Analysis of the relationship between the blood concentration of several metals, macro- and micronutrients and endocrine disorders associated with male aging.
    Rotter I; Kosik-Bogacka DI; Dołęgowska B; Safranow K; Kuczyńska M; Laszczyńska M · Environmental geochemistry and health · 2017
    Cross-sectional study313 participantsTestosterone Support forMagnesium
  65. Effect of magnesium supplementation in improving hyperandrogenism, hirsutism, and sleep quality in women with polycystic ovary syndrome: A randomized, placebo-controlled clinical trial.
    Gholizadeh-Moghaddam M; Ghasemi-Tehrani H; Askari G; Jaripur M; Clark CCT; Rouhani MH · Health science reports · 2024
    Randomized trial64 participantsTestosterone Support forMagnesium
  66. The effects of trace element supplementation on glycolipid metabolism in PCOS: a systematic review and meta-analysis.
    Yang L; Gao Y; Zhao W; Qi Y; Duo X; Wang H · Frontiers in nutrition · 2025
    Meta-analysis1,600 participants25 studies pooledTestosterone Support forMagnesium
  67. Effects of magnesium supplementation on testosterone levels of athletes and sedentary subjects at rest and after exhaustion.
    Cinar V; Polat Y; Baltaci AK; Mogulkoc R · Biological trace element research · 2011
    Non-randomized trial20 participantsTestosterone Support forMagnesium
  68. Efficacy of selenium and/or N-acetyl-cysteine for improving semen parameters in infertile men: a double-blind, placebo controlled, randomized study.
    Safarinejad MR; Safarinejad S · The Journal of urology · 2009
    Randomized trial468 participantsTestosterone Support forSelenium
  69. The association between metal exposure and semen quality in Chinese males: The mediating effect of androgens.
    Liu P; Yuan G; Zhou Q; Liu Y; He X; Zhang H; Guo Y; Wen Y; Huang S; Ke Y; Chen J · Environmental pollution (Barking, Essex : 1987) · 2020
    Cross-sectional study1,136 participantsTestosterone Support forSelenium
  70. In utero and peripubertal metals exposure in relation to reproductive hormones and sexual maturation and progression among girls in Mexico City.
    Ashrap P; Sánchez BN; Téllez-Rojo MM; Basu N; Tamayo-Ortiz M; Peterson KE; Meeker JD; Watkins DJ · Environmental research · 2019
    Observational study132 participantsTestosterone Support forSelenium
  71. Relationship between serum levels of testosterone, zinc and selenium in infertile males attending fertility clinic in Nnewi, south east Nigeria.
    Oluboyo AO; Adijeh RU; Onyenekwe CC; Oluboyo BO; Mbaeri TC; Odiegwu CN; Chukwuma GO; Onwuasoanya UF · African journal of medicine and medical sciences · 2013
    Observational studyTestosterone Support forSelenium
  72. EVALUATION OF MALE SEX HORMONES AND TRACE ELEMENTS IN MALE TYPE 2 DIABETIC PATIENTS ATTENDING NNAMDI AZIKIWE UNIVERSITY TEACHING HOSPITAL DIABETIC CLINICS.
    Ubajaka CF; Meludu SC; Dioka CE; Onah CE; Osuji CU; Modebe IA; Ifeadike GC; Okwara JE; Amah UK; Nnebue CC · Nigerian journal of medicine : journal of the National Association of Resident Doctors of Nigeria · 2015
    Cross-sectional studyTestosterone Support forSelenium
  73. 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
  74. 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
  75. 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
  76. 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
  77. 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
  78. 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
  79. 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
  80. 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
  81. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  82. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc