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Calcium Magnesium Zinc

Nature's Bounty
4.8
★ ★ ★ ★ ★
(65177 ratings)
Calcium 333 mg
Vitamin D 200 IU
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Score80
The low-cost, one-tablet format covers several basic minerals, but mixed-quality forms and duplicate label entries weaken clarity. Vitamin D contributes only modestly.
How scoring works
Quantity:100 Tablet(s) • (100 servings)
Goals:

Score 80

The low-cost, one-tablet format covers several basic minerals, but mixed-quality forms and duplicate label entries weaken clarity. Vitamin D contributes only modestly.
How scoring works
$5.84($0.05 per serving)
iHerb
$ 5.84
Vitacost
$ 6.39
Vitacost
$ 6.43
Amazon
$ 5.84
Walmart
$ 6.77
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Analysis

The tablet combines calcium with magnesium, zinc, and vitamin D3 in a compact, inexpensive format. Calcium gluconate, magnesium gluconate, and zinc citrate or gluconate improve the mix, but calcium carbonate and magnesium oxide are less absorption-friendly forms.

Each nutrient appears more than once under different forms, and the label presentation does not clearly distinguish a form split from an added amount. Vitamin D is only a small supporting component, so the formula is mainly a mineral product rather than a focused vitamin D option.

One tablet per listed serving is convenient and keeps the cost low. Users who need precise mineral totals or who are sensitive to oxide-based magnesium may prefer a more clearly specified formula.

Who is it for
  • Budget-conscious adults seeking basic mineral support
  • Users who want calcium, magnesium, and zinc in one tablet
  • People who do not need a high vitamin D amount
Best for
  • Low-cost daily mineral intake
  • A compact single-tablet serving
  • Basic calcium and zinc support

Pros

  • Combines calcium, magnesium, zinc, and vitamin D
  • Includes several citrate or gluconate mineral forms
  • Uses a convenient one-tablet serving
  • Provides strong practical value

Cons

  • Includes calcium carbonate and magnesium oxide
  • Duplicate entries make totals difficult to interpret
  • Vitamin D is only a small supporting amount
  • Full excipient details are not provided

Warnings

  • Calcium may cause constipation or stomach discomfort in sensitive users.
  • The magnesium component requires added caution with reduced kidney function because magnesium clearance may be impaired.
  • Calcium, magnesium, and zinc can reduce absorption of levothyroxine and certain antibiotics; use the medicine-specific separation interval.

Nutrient quality

81 Highest impact

A focused mineral combination provides moderate amounts without obvious overdosing. Less favorable calcium and magnesium forms plus modest vitamin D limit formula quality.

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Ingredient transparency

71 High impact

Active amounts and forms are mostly visible without a proprietary blend. Repeated entries, missing inactive ingredients, and incomplete directions create some uncertainty.

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Customer satisfaction

73 High impact

The supplied average rating is particularly strong. The exceptionally large review count makes the rating highly reliable.

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Value for money

98 Highest impact

A focused formula and very low serving cost create excellent value. Mixed mineral forms are a limitation but do not erase the cost advantage.

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Ingredients

IngredientAmount per serving
Vitamin D (Cholecalciferol, Vitamin D3)
 200 IU
Calcium (Calcium Carbonate, Calcium Gluconate)
 333 mg
Magnesium (Magnesium Gluconate, Magnesium Oxide)
 133 mg
Zinc (Zinc Citrate, Zinc Gluconate)
 8 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
Calcium (Calcium Carbonate, Calcium Gluconate) · 333 mg OverallScore79
C+ Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyA+ Value

Calcium carbonate and gluconate provide basic forms with lower absorption potential than citrate or chelates. The 333 mg calcium amount offers a useful supplemental dose below the single-dose absorption ceiling. Vitamin D3, magnesium, and zinc broaden the mineral formula while the serving cost stays exceptionally low.

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Vitamin D (Cholecalciferol, Vitamin D3) · 200 IU OverallScore51
B- Active Ingredient Quality & BioavailabilityD- Dose, Safety & Label TransparencyF Value

Vitamin D3 is used, but the low dose and dry tablet format limit its fit for this collection. The raw vitamin D source and independent quality certification are not disclosed. No flagged additives appear in the supplied data, while cost efficiency remains weak when judged by vitamin D delivery alone.

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