Nature's Bounty Calcium 1200 mg + Vitamin D3 1000 IU supplement bottle
Nature's Bounty

Calcium 1200 mg + Vitamin D3 1000 IU Review

What We Researched
4 active ingredients analyzed · 7 inactive ingredients decoded · 7 brand certifications checked · Page generated: Sep 2026
93
Product Score Excellent
100
Brand Score Excellent

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin D (as Cholecalciferol, Vitamin D3) 25 mcg 125%
Calcium (as Calcium Carbonate) 1200 mg 92%
Bioavailability Very Good

Absorption Rating

  • Vitamin D (as Cholecalciferol, Vitamin D3) Good
  • Calcium (as Calcium Carbonate) Fair
Other Ingredients Excellent

Fillers & Additives

  • Corn Oil
  • Gelatin
  • Soybean Oil
  • Vegetable Glycerin
  • Turmeric Extract
  • White Beeswax
  • Soy Lecithin
Efficacy Excellent

Dosage Analysis

  • Vitamin D (as Cholecalciferol, Vitamin D3) 25 mcg Effective
  • Calcium (as Calcium Carbonate) 1200 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Calories 15 kcal
Total Fat 1 g 1%
Vitamin D (as Cholecalciferol, Vitamin D3) 25 mcg 125%
Calcium (as Calcium Carbonate) 1200 mg 92%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Corn Oil Generally_safe

It is used as a carrier oil or emollient.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Soybean Oil Safe

Dissolves fat-soluble ingredients. Contains soy allergen.

Vegetable Glycerin Safe

Helps form softgel capsule shells and acts as a humectant.

Turmeric Extract Unknown
White Beeswax Generally_safe

It is used as a coating or binder in supplements.

Soy Lecithin Safe

Helps blend oil and water-based ingredients. Common allergen.

Brand Trust Report
Nature's Bounty

Founded 1971 · Ronkonkoma, New York, USA · 712 products · naturesbounty.com

Certifications

7 certifications
Clean Label Project Source available Primary evidence
Health Canada Licensed Source available Primary evidence
Labdoor Source available Primary evidence
Usda Organic Source available Primary evidence
Consumerlab Verified evidence Primary evidence
Fda Gmp Inspections Source available Primary evidence
USP Verified Supporting evidence unavailable

Transparency

5 claims
Third Party Testing Claim — Verified Evidence available Evidence
In House Testing — Verified Evidence available Evidence
Testing Lab Disclosure — Claimed Brand claim; evidence unavailable
Contains Proprietary Blend — True Brand claim; evidence unavailable

Violation History

5 incidents
Lawsuit Falsely advertising heart health benefits of fish oil supplements.2025 Source checked Primary source
Lawsuit Deceptive use of Amazon reviews ('review hijacking') to promote products.2024 Source checked Primary source
Recall Nature's Bounty Kids Multivitamin Gummies2023-06-02 Source available Primary source
Prop 65 Lead2023-03-28 Source available Primary source
Lawsuit Falsely advertising 'fish oil' supplements that are a synthetic omega-3 product.2023 Source checked Primary source
Related Supplements
Frequently Asked Questions
Is Nature's Bounty Calcium 1200 mg + Vitamin D3 1000 IU a good supplement?

Nature's Bounty Calcium 1200 mg + Vitamin D3 1000 IU received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 4 active ingredients with 110 servings per container. Of the 7 inactive ingredients, 6 are rated safe and 0 ingredients are flagged for review. The manufacturer, Nature's Bounty, holds a brand trust score of 100/100 with 1 verified certifications including Consumerlab.

What are the ingredients in Nature's Bounty Calcium 1200 mg + Vitamin D3 1000 IU?

Nature's Bounty Calcium 1200 mg + Vitamin D3 1000 IU contains 4 active ingredients: Calories (15 kcal), Total Fat (1 g), Vitamin D (as Cholecalciferol, Vitamin D3) (25 mcg), Calcium (as Calcium Carbonate) (1200 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Bounty Calcium 1200 mg + Vitamin D3 1000 IU safe to take?

GoodSupp reviewed the inactive-ingredient data available for Nature's Bounty Calcium 1200 mg + Vitamin D3 1000 IU. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. 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 100/100 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 712 products in their lineup. They hold 1 verified certifications including Consumerlab. The linked records document particular certification scopes; they do not prove that every product or batch was independently tested for contents, purity, or effectiveness. Note: Nature's Bounty has 5 historical regulatory incidents 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 150,000 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 150,000 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 — read our methodology. 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.