Nature's Lab Biotin 5,000 mcg supplement bottle
Nature's Lab

Biotin 5,000 mcg Review

What We Researched
1 active ingredient analyzed · 5 inactive ingredients decoded · 6 brand certifications checked · Last updated: Aug 2026
100
Product Score Excellent
97
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 5000 mcg 1667%
Bioavailability Excellent

Absorption Rating

  • Biotin Good
Other Ingredients Excellent

Fillers & Additives

  • Magnesium Stearate
  • Gelatin
  • Silicon Dioxide
  • Rice Flour
  • Silica
Efficacy Excellent

Dosage Analysis

  • Biotin 5000 mcg Effective

Supplement Facts

Ingredient Amount % Daily Value
Biotin 5000 mcg 1667%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Brand Trust Report
Nature's Lab

Founded 2011 · Las Vegas, Nevada, United States · 65 products · natureslab.com/

Certifications

6 certifications
Fda Gmp Inspections Verified Source
USP Verified Verified
IGEN Non-GMO Tested Verified
USDA Organic Verified
Non-GMO Project Verified Verified
Gluten-Free Certified Verified

Transparency

4 claims
Third Party Testing Claim — Verified Source
In House Testing — Verified Source
Testing Lab Disclosure — True

Violation History

3 incidents
Fda Warning Serious violations of FDA's regulations for Current Good Manufacturing Practice (CGMP) in Manufacturing, Packaging, Labeling, or Holding Operations for Dietary Supplements. Specifically, failure to establish required specifications for points, steps, or stages in the manufacturing process where control is necessary to ensure the quality of the dietary supplement.2022-07-12Source
Prop 65 Not specified in the notice summary2020-11-25Source
Fda Warning Letter FDA Warning LetterSource
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Frequently Asked Questions
Is Nature's Lab Biotin 5,000 mcg a good supplement?

Nature's Lab Biotin 5,000 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 with 60 servings per container. All 5 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Nature's Lab, holds a brand trust score of 97/100 with 6 verified certifications including Fda Gmp Inspections, USP Verified, IGEN Non-GMO Tested, USDA Organic.

What are the ingredients in Nature's Lab Biotin 5,000 mcg?

Nature's Lab Biotin 5,000 mcg contains 1 active ingredients: Biotin (5000 mcg). Notable high-dose ingredients include Biotin at 1667% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Lab Biotin 5,000 mcg safe to take?

Nature's Lab Biotin 5,000 mcg has been analyzed for ingredient safety across all its components. All 5 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 Lab a trustworthy supplement brand?

Nature's Lab receives a brand trust score of 97/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2011 and headquartered in Las Vegas, Nevada, United States, the company offers 65 products in their lineup. They hold 6 verified certifications including Fda Gmp Inspections, USP Verified, IGEN Non-GMO Tested, USDA Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Nature's Lab has 3 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.