Nature's Bounty Nature's Bounty Cal-Mag-Zinc + D3 Value Size supplement bottle
Nature's Bounty

Nature's Bounty Cal-Mag-Zinc + D3 Value Size

What We Researched
4 active ingredients analyzed · 9 inactive ingredients decoded · 6 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
55
Product Score Poor
86
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Calcium (Calcium Carbonate and Calcium Gluconate) 333 mg
Magnesium (Magnesium Oxide and Magnesium Gluconate) 133 mg
Zinc (Zinc Gluconate and Zinc Citrate) 8 mg
Vitamin D (Cholecalciferol) 5 mcg (200 IU)
Bioavailability Good

Absorption Rating

  • Calcium (Calcium Carbonate and Calcium Gluconate) Fair
  • Magnesium (Magnesium Oxide and Magnesium Gluconate) Poor
  • Zinc (Zinc Gluconate and Zinc Citrate) Good
  • Vitamin D (Cholecalciferol) Good
Other Ingredients Fair

Fillers & Additives

  • Cellulose (Plant Origin)
  • Croscarmellose Sodium
  • Hypromellose
  • Maltodextrin
  • Polysorbate 80 Medium
  • Purified Water
  • Titanium Dioxide High
  • Triacetin
  • Vegetable Magnesium Stearate
Efficacy Poor

Dosage Analysis

  • Calcium (Calcium Carbonate and Calcium Gluconate) 333 mg Under-dosed
  • Magnesium (Magnesium Oxide and Magnesium Gluconate) 133 mg Under-dosed
  • Zinc (Zinc Gluconate and Zinc Citrate) 8 mg Effective
  • Vitamin D (Cholecalciferol) 5 mcg (200 IU) Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calcium (Calcium Carbonate and Calcium Gluconate) 333 mg
Magnesium (Magnesium Oxide and Magnesium Gluconate) 133 mg
Zinc (Zinc Gluconate and Zinc Citrate) 8 mg
Vitamin D (Cholecalciferol) 5 mcg (200 IU)

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Cellulose (Plant Origin) Safe

It is used as a filler, binder, or thickener.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Polysorbate 80 Caution

Helps mix oil and water-based ingredients.

Purified Water Safe

Dissolves and carries water-soluble ingredients.

Titanium Dioxide Caution

Used as a whitening agent in tablet coatings and capsules.

Triacetin Generally_safe

It is used as a solvent or humectant.

Vegetable Magnesium Stearate Safe

Prevents ingredients from sticking to equipment. Derived from vegetable sources.

Price Comparison

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Nature's Bounty

Founded 1971 · Ronkonkoma, New York, USA · 156 products · naturesbounty.com

Certifications

6 certifications
Clean Label Project Verified Source
Consumerlab Verified
Health Canada Licensed Verified Source
Labdoor Verified Source
Usda Organic Verified Source
Fda Gmp Inspections Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
In House Testing — Verified Source

Violation History

1 incident
Recall Nature's Bounty Kids Multivitamin Gummies2023-06-02Source
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Frequently Asked Questions
Is Nature's Bounty Nature's Bounty Cal-Mag-Zinc + D3 Value Size a good supplement?

Nature's Bounty Nature's Bounty Cal-Mag-Zinc + D3 Value Size received a product quality score of 55/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. The product contains 4 active ingredients Of the 9 inactive ingredients, 5 are rated safe and 2 are flagged for review. The manufacturer, Nature's Bounty, holds a brand trust score of 86/100 with 6 verified certifications including Clean Label Project, Consumerlab, Health Canada Licensed, Labdoor.

What are the ingredients in Nature's Bounty Nature's Bounty Cal-Mag-Zinc + D3 Value Size?

Nature's Bounty Nature's Bounty Cal-Mag-Zinc + D3 Value Size contains 4 active ingredients: Calcium (Calcium Carbonate and Calcium Gluconate) (333 mg), Magnesium (Magnesium Oxide and Magnesium Gluconate) (133 mg), Zinc (Zinc Gluconate and Zinc Citrate) (8 mg), Vitamin D (Cholecalciferol) (5 mcg (200 IU)). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Bounty Nature's Bounty Cal-Mag-Zinc + D3 Value Size safe to take?

Nature's Bounty Nature's Bounty Cal-Mag-Zinc + D3 Value Size has been analyzed for ingredient safety across all its components. Of 9 inactive ingredients, 5 are rated safe. 2 ingredients are flagged for review: Polysorbate 80, Titanium Dioxide. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Nature's Bounty a trustworthy supplement brand?

Nature's Bounty receives a brand trust score of 86/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1971 and headquartered in Ronkonkoma, New York, USA, the company offers 156 products in their lineup. They hold 6 verified certifications including Clean Label Project, Consumerlab, Health Canada Licensed, Labdoor. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Nature's Bounty has 1 historical regulatory incident on record, which are factored into the trust score.

What is magnesium good for?

Magnesium Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding magnesium good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

How much magnesium per day?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What is zinc good for?

Zinc Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding zinc good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.