Nature's Bounty Biotin, 1000 mcg supplement bottle
Nature's Bounty

Biotin, 1000 mcg 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
Biotin (as d-Biotin) 1000 mcg 333%
Bioavailability Excellent

Absorption Rating

  • Biotin (as d-Biotin) Good
Other Ingredients Excellent

Fillers & Additives

  • Dicalcium Phosphate
  • Vegetable Cellulose
  • Silica
  • Vegetable Magnesium Stearate
Efficacy Excellent

Dosage Analysis

  • Biotin (as d-Biotin) 1000 mcg Effective

Supplement Facts

Ingredient Amount % Daily Value
Biotin (as d-Biotin) 1000 mcg 333%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Vegetable Cellulose Safe

Forms a vegetarian capsule shell alternative to gelatin.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Vegetable Magnesium Stearate Safe

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

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 Biotin, 1000 mcg a good supplement?

Nature's Bounty Biotin, 1000 mcg 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 Biotin, 1000 mcg?

Nature's Bounty Biotin, 1000 mcg contains 1 active ingredients: Biotin (as d-Biotin) (1000 mcg). Notable high-dose ingredients include Biotin at 333% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Bounty Biotin, 1000 mcg safe to take?

Nature's Bounty Biotin, 1000 mcg 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.

How much vitamin d3 should i take daily?

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 does vitamin d do?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 150,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How much vitamin d3 per day for a woman?

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.

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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.