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Centrum Silver Adults 50+

GSK
4.8
★ ★ ★ ★ ★
(3026 ratings)
Iodine 150 mcg
Calcium 220 mg
Chloride 72 mg
Manganese 2.3 mg
Molybdenum 45 mcg
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Score75
A broad senior multivitamin for convenient everyday coverage. Limited form disclosure and lightly dosed specialty nutrients keep it in a maintenance role.
How scoring works
Quantity:125 Tablet(s) • (125 servings)
Goals:
Energy

Score 75

A broad senior multivitamin for convenient everyday coverage. Limited form disclosure and lightly dosed specialty nutrients keep it in a maintenance role.
How scoring works
$10.76($0.08 per serving)
Vitacost
$ 13.49
Walmart
$ 10.76
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Analysis

The tablet includes the major vitamins plus iodine, zinc, selenium, copper, manganese, chromium, molybdenum, chloride, and potassium. B vitamins and vitamin D3 support normal metabolism without creating an acute energy effect.

Many chemical forms are not listed, preventing a meaningful assessment of absorption quality. Calcium, magnesium, lutein, and lycopene amounts are too small for dedicated bone or eye support.

The once-daily format and large bottle fit broad nutritional maintenance. Users with a defined deficiency or absorption problem may need a targeted product with clearer forms and larger relevant amounts.

Who is it for
  • Adults over 50
  • Once-daily multivitamin users
  • People seeking broad nutrient maintenance
Best for
  • General daily coverage
  • Normal energy metabolism
  • Long serving convenience

Pros

  • Wide vitamin and mineral profile
  • Includes vitamin D3
  • Once-daily format
  • Long serving supply

Cons

  • Many forms are unspecified
  • Low calcium and magnesium
  • Small lutein and lycopene amounts
  • Not a targeted energy formula

Warnings

  • Vitamin K can interfere with warfarin dose control, so intake must remain consistent under prescriber guidance.
  • Iodine may require review for users with thyroid disorders or thyroid medicines.
  • The multivitamin should be counted alongside fortified foods and other supplements to prevent unnecessary duplication.

Nutrient quality

65 High impact

Most nutrients lack their chemical forms, so absorption quality cannot be judged confidently. Amounts broadly suit maintenance, while several minerals provide only partial daily coverage.

Ingredient transparency

75 High impact

Every active nutrient has a specific listed amount. Generic nutrient names omit important form information.

Customer satisfaction

71 High impact

The aggregate rating is strong and the available feedback volume gives it useful statistical support. No specific review comments are supplied to assess recurring benefits or complaints.

Value for money

88 Highest impact

Broad coverage and a long supply offer useful basic value despite weak form transparency. The tiny carotenoid additions add limited practical value.

Report analysis

Goals

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

B vitamins and iodine support normal fuel metabolism, while the wider multivitamin helps fill nutritional gaps in adults over fifty. The formula does not contain a stimulant or a dedicated mitochondrial active.

Vitamin B12 and magnesium fall below the rubric’s focused amounts, and cyanocobalamin, magnesium oxide, and zinc oxide limit form quality. It is more useful for baseline nutrition than for a noticeable energy effect.

Study evidence
Iodine Adverse 3 studies
Magnesium Supportive 4 studies

Ingredients

IngredientAmount per serving
Vitamin A (Beta-Carotene)
750 mcg
Vitamin C
60 mg
Vitamin D3
25 mcg
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
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
Lutein
250 mcg
Lycopene
300 mcg
Gluten Free Seniors 50+
Report overview
Iodine · 150 mcg OverallScore77
D- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

Missing source identity leaves both bioavailability and marine-purity risk uncertain. The 150 mcg amount matches standard daily support needs and remains below the adult upper limit. Very low serving cost is attractive despite incomplete source disclosure.

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

The chloride amount is moderate and clearly disclosed, making it a useful part of a broader multivitamin. The source salt is not identified, which leaves form quality uncertain. A single tablet is convenient and inexpensive per serving.

Calcium · 220 mg OverallScore56
F Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyA+ Value

A modest calcium amount is included, but its chemical form is not disclosed. The dose is efficiently sized and avoids the absorption ceiling. Very low serving cost supports excellent basic value, though form transparency remains weak.

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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