Dr. Mercola Biothin®, Berberine with Chromium, 30 Capsules supplement bottle
Dr. Mercola

Biothin®, Berberine with Chromium, 30 Capsules

What We Researched
3 active ingredients analyzed · 8 inactive ingredients decoded · 4 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
83
Product Score Good
81
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Niacin (from Chromium Polynicotinate) 2.4 mg 15%
Chromium (from Chromium Polynicotinate) 400 mcg 1143%
Berberine Phytosome Complex^(from Berberis aristata Root Extract) 350 mg *
Bioavailability Excellent

Absorption Rating

  • Niacin (from Chromium Polynicotinate) Good
  • Chromium (from Chromium Polynicotinate) Good
  • Berberine Phytosome Complex^(from Berberis aristata Root Extract) Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Capsule (Hydroxypropyl Methylcellulose)
  • Pea Protein
  • Sunflower Lecithin
  • Grape Seed Extract
  • Silicon Dioxide
  • Hydroxypropyl Cellulose
  • Ascorbyl Palmitate
Efficacy Poor

Dosage Analysis

  • Niacin (from Chromium Polynicotinate) 2.4 mg Under-dosed
  • Chromium (from Chromium Polynicotinate) 400 mcg Effective
  • Berberine Phytosome Complex^(from Berberis aristata Root Extract) 350 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Niacin (from Chromium Polynicotinate) 2.4 mg 15%
Chromium (from Chromium Polynicotinate) 400 mcg 1143%
Berberine Phytosome Complex^(from Berberis aristata Root Extract) 350 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Capsule (Hydroxypropyl Methylcellulose) Safe

It provides a vegetarian encapsulation option.

Pea Protein Safe

It is used as a filler or to increase protein content.

Sunflower Lecithin Safe

Helps mix oil and water-based ingredients. Allergen-free alternative to soy lecithin.

Grape Seed Extract Generally_safe

It is included for its antioxidant properties.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Ascorbyl Palmitate Safe

Prevents oxidation and extends shelf life of oil-based supplements.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$26$25$24$23$22 Mar 12 $24.19
iHerb

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

Brand Trust Report
Dr. Mercola

Founded 1997 · Cape Coral, Florida, USA · 209 products · mercola.com/

Certifications

4 certifications
Consumerlab Verified Source
Nsf Gmp Verified Source
Usda Organic Verified Source
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Verified Source

Violation History

7 incidents
Prop 65 Lead2025-04-18Source
Lawsuit Wrongful termination and breach of a severance contract by the former CEO.2024Source
Fda Warning Unapproved and misbranded products related to Coronavirus Disease 2019 (COVID-19).2021-02-18Source
Lawsuit False and unsupported claims that its indoor tanning systems are safe and do not increase the risk of skin cancer.2016Source
Fda Warning Illegal marketing of a medical device.2011-01-01Source
Fda Warning Illegal drug claims for various supplements.2006-01-01Source
Fda Warning Illegal drug claims for various supplements.2005-01-01Source
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Frequently Asked Questions
Is Dr. Mercola Biothin®, Berberine with Chromium a good supplement?

Dr. Mercola Biothin®, Berberine with Chromium, 30 Capsules received a product quality score of 83/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 3 active ingredients with 30 servings per container. Of the 8 inactive ingredients, 7 are rated safe and 0 are flagged for review. The manufacturer, Dr. Mercola, holds a brand trust score of 81/100 with 4 verified certifications including Consumerlab, Nsf Gmp, Usda Organic, Fda Gmp Inspections.

What are the ingredients in Dr. Mercola Biothin®, Berberine with Chromium?

Dr. Mercola Biothin®, Berberine with Chromium contains 3 active ingredients: Niacin (from Chromium Polynicotinate) (2.4 mg), Chromium (from Chromium Polynicotinate) (400 mcg), Berberine Phytosome Complex^(from Berberis aristata Root Extract) (350 mg). Notable high-dose ingredients include Chromium at 1143% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Dr. Mercola Biothin®, Berberine with Chromium safe to take?

Dr. Mercola Biothin®, Berberine with Chromium, 30 Capsules has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Dr. Mercola a trustworthy supplement brand?

Dr. Mercola receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1997 and headquartered in Cape Coral, Florida, USA, the company offers 209 products in their lineup. They hold 4 verified certifications including Consumerlab, Nsf Gmp, Usda Organic, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Dr. Mercola has 7 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 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.