Nature's Bounty Calcium Pills plus Vitamin D3 1200mg Supplement & Vitamin D3 Pills and Supplement, Helps Support Immune Function, 1000iu supplement bottle
Nature's Bounty

Calcium Pills plus Vitamin D3 1200mg Supplement & Vitamin D3 Pills and Supplement, Helps Support Immune Function, 1000iu Review

What We Researched
1 active ingredient analyzed · 4 inactive ingredients decoded · 7 brand certifications checked · Last updated: Aug 2026
100
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 D3 (Cholecalciferol) 25 mcg (1000 IU/UI)
Bioavailability Excellent

Absorption Rating

  • Vitamin D3 (Cholecalciferol) Good
Other Ingredients Excellent

Fillers & Additives

  • Gelatin
  • Glycerin
  • Purified Water
  • Soybean Oil
Efficacy Excellent

Dosage Analysis

  • Vitamin D3 (Cholecalciferol) 25 mcg (1000 IU/UI) Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D3 (Cholecalciferol) 25 mcg (1000 IU/UI)

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Purified Water Safe

Dissolves and carries water-soluble ingredients.

Soybean Oil Safe

Dissolves fat-soluble ingredients. Contains soy allergen.

Brand Trust Report
Nature's Bounty

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

Certifications

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

Transparency

5 claims
Third Party Testing Claim — Verified Source
In House Testing — Verified Source
Testing Lab Disclosure — Claimed
Contains Proprietary Blend — True

Violation History

5 incidents
Lawsuit Falsely advertising heart health benefits of fish oil supplements.2025Source
Lawsuit Deceptive use of Amazon reviews ('review hijacking') to promote products.2024Source
Recall Nature's Bounty Kids Multivitamin Gummies2023-06-02Source
Prop 65 Lead2023-03-28Source
Lawsuit Falsely advertising 'fish oil' supplements that are a synthetic omega-3 product.2023Source
Related Supplements
Frequently Asked Questions
Is Nature's Bounty Calcium Pills plus Vitamin D3 1200mg Supplement & Vitamin D3 Pills and Supplement, Helps Support Immune Function a good supplement?

Nature's Bounty Calcium Pills plus Vitamin D3 1200mg Supplement & Vitamin D3 Pills and Supplement, Helps Support Immune Function, 1000iu received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients All 4 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Nature's Bounty, holds a brand trust score of 100/100 with 7 verified certifications including Clean Label Project, Health Canada Licensed, Labdoor, Usda Organic.

What are the ingredients in Nature's Bounty Calcium Pills plus Vitamin D3 1200mg Supplement & Vitamin D3 Pills and Supplement, Helps Support Immune Function?

Nature's Bounty Calcium Pills plus Vitamin D3 1200mg Supplement & Vitamin D3 Pills and Supplement, Helps Support Immune Function contains 1 active ingredients: Vitamin D3 (Cholecalciferol) (25 mcg (1000 IU/UI)). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Bounty Calcium Pills plus Vitamin D3 1200mg Supplement & Vitamin D3 Pills and Supplement, Helps Support Immune Function safe to take?

Nature's Bounty Calcium Pills plus Vitamin D3 1200mg Supplement & Vitamin D3 Pills and Supplement, Helps Support Immune Function, 1000iu has been analyzed for ingredient safety across all its components. All 4 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. 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 7 verified certifications including Clean Label Project, Health Canada Licensed, Labdoor, Usda Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. 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.