Centrum Silver Adults 50+

Centrum Silver Adults 50+

GSK4.8 (3,026 ratings)
Format:Tablet Quantity: 220 Tablet(s) · 220 servings
Goals
$19.12 $0.08 per serving

Product analysis

47 out of 100

Centrum Silver Adults 50+ brings a broad range of vitamins and minerals into one supplement. Most nutrient forms are not disclosed, which makes their quality harder to compare.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

Most nutrient forms are unspecified, so confidence in their quality is limited. A few mineral sources can be identified, but their contributions are not always clear.

Ingredient Transparency64

All nutrient amounts are stated, making the contents easy to check. Only vitamin A has its form directly disclosed, leaving most form comparisons unresolved.

Value For Money47

The full serving appears inexpensive for several of its minerals. Value across the complete formula is less certain because many nutrient comparisons are unavailable.

Customer Satisfaction89

Very positive feedback comes from a large number of ratings. The volume gives a broad picture of satisfaction without demonstrating health benefits.

Product Focus37

The broad nutrient mix suits general supplementation more than a narrowly targeted formula. No ingredient is confirmed unnecessary, although the long list makes individual contributions harder to distinguish.

Format
Tablet
Container
220 Tablet(s)
Per serving
$0.08
Customer rating
4.8 · 3,026 ratings
Report analysis

Goals

Impact
High effect
B- Ingredient FitF PathwaysA EvidenceA+ Formulation Logic
Iodine · 150 mcgVitamin D · 25 mgVitamin B5 · 10 mgMagnesium · 50 mgRiboflavin · 1.7 mgThiamin · 1.5 mgVitamin B12 · 25 mcgPotassium · 80 mg

Thiamin, riboflavin, niacin and vitamin B5 support normal energy metabolism, while folate and vitamin B6 address functions relevant to deficiency-related tiredness. Vitamin C also helps fill a nutritional gap linked to fatigue. Vitamin D receives a contribution, but its supplied fatigue evidence is specific to deficient adults; the unusually large stored amount is not a validated fatigue dose. Magnesium and vitamin B12 fall below the saved inclusion criteria.

How this product is rated for Energy

Ingredient fit73

Relevant ingredients contribute within a broader formula that is less focused on energy. Declared amounts receive partial recognition overall; the comparison does not establish a clinically effective fatigue dose.
Goal fit
Relevant ingredients contribute within a broader formula that is less focused on energy.
Dose adequacy
Declared amounts receive partial recognition overall; the comparison does not establish a clinically effective fatigue dose.

Pathways0

Nutrient contributions do not cover the evaluated alertness or exercise pathways.
Depth
Nutrient contributions do not cover the evaluated alertness or exercise pathways.
Breadth
No evaluated pathway meets the breadth threshold.

Evidence94

Vitamin D leads the saved evidence finding. Iodine lacks recognition as a studied preparation.
Evidence strength
Vitamin D leads the saved evidence finding; its practical relevance depends on the specific population and outcome described.
Studied preparation
Most counted preparations are recognized, but iodine is not identified as a studied preparation.

Formulation logic100

Each counted ingredient contributes independently or has its required partner. No configured conflict was matched.
Partner coverage
Each counted ingredient contributes independently or has its required partner.
Conflicts
No configured ingredient conflict was matched.
Effective doses
Counted ingredients meet the inclusion criterion; magnesium and vitamin B12 remain below it.
Study evidence
Iodine Adverse 3 studies
Magnesium Supportive 4 studies
Potassium Supportive 2 studies
Thiamin Disputed 12 studies
Vitamin D Supportive 32 studies

Ingredients

IngredientAmount per servingScore
Vitamin A (Beta-Carotene)
750 mcg
Vitamin C
60 mg
Vitamin D3
25 mg
Vitamin E
22.5 mg
Vitamin K
30 mcg
Thiamine
1.5 mg
Riboflavin
1.7 mg
Niacin
20 mg
Vitamin B6
3 mg
Folate
667 mcg DFE
Vitamin B12
25 mcg
Biotin
30 mcg
Pantothenic Acid
10 mg
Calcium
220 mg 52
Phosphorus
20 mg
Iodine
150 mcg 88
Magnesium
50 mg
Zinc
11 mg
Selenium
19 mcg
Copper
0.5 mg
Manganese
2.3 mg 58
Chromium
50 mcg
Molybdenum
45 mcg 46
Chloride
72 mg 77
Potassium
80 mg
Lutein
250 mcg
Lycopene
300 mcg
Gluten Free Seniors 50+
Report overview
Iodine · 150 mcg OverallScore88
C+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value
A serving provides 150 mcg of iodine at a low cost per serving. The iodine source is unspecified; Potassium Iodide appears in Other Ingredients, but its contribution to the total is unclear.
How this ingredient is rated

Active Ingredient Quality & Bioavailability69

The iodine source is unspecified; Potassium Iodide appears in Other Ingredients, but its contribution to the total is unclear. No marine source is indicated, so seaweed-specific purity concerns do not apply.
Iodine Form & Bioavailability
The iodine source is unspecified; Potassium Iodide appears in Other Ingredients, but its contribution to the total is unclear.
Marine Source Purity & Sourcing
No marine source is indicated, so seaweed-specific purity concerns do not apply.

Dose, Safety & Label Transparency100

A serving supplies 150 mcg of iodine. The iodine amount is stated.
Dosage Efficacy for Daily Support
A serving supplies 150 mcg of iodine.
Dosage Safety & Upper Limits
The amount is below the 1,100 mcg reference upper limit.
Elemental Iodine Transparency
The iodine amount is stated.

Value100

The cost per serving is low.
Price Per Effective Serving
The cost per serving is low.
Chloride · 72 mg OverallScore77
B+ Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyA+ Value
It provides a moderate 72 mg of chloride per serving at a low cost per serving. Potassium chloride appears in Other Ingredients; the chloride entry does not identify its source.
How this ingredient is rated

Active Ingredient Quality & Bioavailability80

Potassium chloride appears in Other Ingredients; the chloride entry does not identify its source.
Chloride source quality
Potassium chloride appears in Other Ingredients; the chloride entry does not identify its source.

Dose, Safety & Label Transparency63

A serving contains a moderate 72 mg of chloride. The chloride amount is stated, but its salt source is not fully identified in the chloride entry.
Chloride amount per serving
A serving provides 72 mg of chloride, a moderate amount.
Amount and source disclosure
The chloride amount is stated, but its salt source is not fully identified in the chloride entry.

Value100

The cost per serving is low.
Price per serving
The cost per serving is low.
Calcium · 220 mg OverallScore52
F Active Ingredient Quality & BioavailabilityD- Dose, Safety & Label TransparencyA+ Value
Each serving provides 220 mg of calcium at a low cost per serving. The calcium source is unclear; calcium carbonate, dicalcium phosphate and calcium pantothenate are listed separately in Other Ingredients, without an assigned share of the calcium total. An artificial additive is indicated.
How this ingredient is rated

Active Ingredient Quality & Bioavailability37

The calcium source is unclear; calcium carbonate, dicalcium phosphate and calcium pantothenate are listed separately in Other Ingredients, without an assigned share of the calcium total. The elemental calcium amount is stated.
Calcium Form & Absorption Potential
The calcium source is unclear; calcium carbonate, dicalcium phosphate and calcium pantothenate are listed separately in Other Ingredients, without an assigned share of the calcium total.
Elemental Calcium Transparency
The serving declares 220 mg of elemental calcium.

Dose, Safety & Label Transparency42

The serving provides 220 mg of elemental calcium. An artificial additive is indicated, but its identity is not specified. The sugar amount is unavailable.
Absorption-Optimized Serving Dose
The serving provides 220 mg of elemental calcium.
Formulation Purity & Additives
An artificial additive is indicated, but its identity is not specified. The sugar amount is unavailable.

Value100

The cost per serving is low.
Price Per Serving Efficiency
The cost per serving is low.
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. [Efficacy of potassium N-acetylaminosuccinate (Cogitum) in the treatment of asthenic syndrome: results of double-blind placebo-controlled trial].
    Esin RG; Khayrullin IK; Esin OR; Fatykhova AF; Gismatullina EI; Isaeva YN · Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova · 2023
    Randomized trial37 participantsEnergy forPotassium
  9. Human resting energy expenditure in relation to dietary potassium.
    Dériaz O; Thériault G; Lavallée N; Fournier G; Nadeau A; Bouchard C · The American journal of clinical nutrition · 1991
    Randomized trial8 participantsEnergy forPotassium
  10. Physicochemical properties of and volatile compounds in riboflavin fortified cloudy apple juice; study of its effect on job fatigue among Egyptian construction workers.
    Fouad S; Ibrahim GE; Hussein AMS; Ibrahim FA; El Gendy A · Heliyon · 2021
    Non-randomized trialEnergy forRiboflavin
  11. Vitamin B status in patients with chronic fatigue syndrome.
    Heap LC; Peters TJ; Wessely S · Journal of the Royal Society of Medicine · 1999
    Case-control study30 participantsEnergy forRiboflavin
  12. B-vitamins, related vitamers, and metabolites in patients with quiescent inflammatory bowel disease and chronic fatigue treated with high dose oral thiamine.
    Bager P; Hvas CL; Hansen MM; Ueland P; Dahlerup JF · Molecular medicine (Cambridge, Mass.) · 2023
    Observational studyEnergy forRiboflavin
  13. Metabolic features of chronic fatigue syndrome.
    Naviaux RK; Naviaux JC; Li K; Bright AT; Alaynick WA; Wang L; Baxter A; Nathan N; Anderson W; Gordon E · Proceedings of the National Academy of Sciences of the United States of America · 2024
    Case-control study84 participantsEnergy forRiboflavin
  14. Effectiveness of Riboflavin in Inherited Metabolic Diseases: A Systematic Review
    Bregje Jaeger, Nina N Stolwijk, Femke Aaldering, Charlotte A Ruys, Marije Smits, Nicole I Wolf, Carla E M Hollak, Annet M Bosch · Journal of Inherited Metabolic Disease · 2026
    Systematic review381 studies pooledEnergy forRiboflavin
  15. Influence of thiamin supplementation on the health and general well-being of an elderly Irish population with marginal thiamin deficiency.
    Smidt LJ; Cremin FM; Grivetti LE; Clifford AJ · Journal of gerontology · 1991
    Randomized trial80 participantsEnergy forThiamin
  16. Randomised clinical trial: high-dose oral thiamine versus placebo for chronic fatigue in patients with quiescent inflammatory bowel disease.
    Bager P; Hvas CL; Rud CL; Dahlerup JF · Alimentary pharmacology & therapeutics · 2021
    Randomized trial40 participantsEnergy forThiamin
  17. Dietary reference values for thiamin.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA); Turck D; Bresson JL; Burlingame B; Dean T; Fairweather-Tait S; Heinonen M; Hirsch-Ernst KI; Mangelsdorf I; McArdle HJ; Naska A; Nowicka G; Pentieva K; Sanz Y; Siani A; Sjödin A; Stern M; Tomé D; Van Loveren H; Vinceti M; Willatts P; Lamberg-Allardt C; Przyrembel H; Tetens I; Gudelj Rakic J; Ioannidou S; de Sesmaisons-Lecarré A; Forss AC; Neuhäuser-Berthold M · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusEnergy forThiamin
  18. Effects of thiamine supplementation on exercise-induced fatigue.
    Suzuki M; Itokawa Y · Metabolic brain disease · 1996
    Randomized trial16 participantsEnergy forThiamin
  19. Long-term maintenance treatment with 300 mg thiamine for fatigue in patients with inflammatory bowel disease: results from an open-label extension of the TARIF study.
    Bager P; Hvas CL; Rud CL; Dahlerup JF · Scandinavian journal of gastroenterology · 2022
    Randomized trialEnergy forThiamin
  20. A new perspective on vitamin B12 deficiency in rheumatology: a case-based review.
    Dułak NA; Rytlewska M; Jaskólska M; Chmielewski M · Rheumatology international · 2024
    Case series3 participantsEnergy forVitamin B12