Irwin Naturals Biotin-6000®, 60 Liquid Soft-Gels supplement bottle
Irwin Naturals

Biotin-6000®, 60 Liquid Soft-Gels

What We Researched
19 active ingredients analyzed · 12 inactive ingredients decoded · 1 brand certification checked · 3 retailers compared · Last updated: Mar 2026
72
Product Score Fair
78
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 1 g <1%**
Biotin 6,000 mcg 20,000%
Calcium 40 mg 3%
Avocado Oil (fruit) 400 mg
Coconut Oil (copra) 400 mg
ConcenTrace® Trace Mineral Complex 200 mg
Enzyme Blend 5 150 mg
Protease 3,959 HUT
Amylase 2,297 DU
Cellulase 773 CU
Lipase 467 LU
Lactase 75 ALU
Trimethylglycine (TMG)(as Betaine Hydrochloride) 120 mg
Aztec Marigold extract (20% lutein, 12 mg, 1% zeaxanthin, 0.6 mg) (flower) 60 mg
Bamboo (Bambusa vulgaris) extract (70% silica, 35 mg) (stem and leaf) 50 mg
BioPerine ComplexBioPerine® Black Pepper extract (95% piperine)(fruit), Ginger extract (5% gingerols) (rhizome) 6 mg
Bioavailability Very Good

Absorption Rating

  • Total Carbohydrates Fair
  • Biotin Good
  • Calcium Good
  • Avocado Oil (fruit) Good
  • Coconut Oil (copra) Good
  • ConcenTrace® Trace Mineral Complex Fair
  • Enzyme Blend 5 Good
  • Protease Good
  • Amylase Good
  • Cellulase Fair
  • Lipase Good
  • Lactase Fair
  • Trimethylglycine (TMG)(as Betaine Hydrochloride) Good
  • Aztec Marigold extract (20% lutein, 12 mg, 1% zeaxanthin, 0.6 mg) (flower) Good
  • Bamboo (Bambusa vulgaris) extract (70% silica, 35 mg) (stem and leaf) Fair
  • BioPerine ComplexBioPerine® Black Pepper extract (95% piperine)(fruit), Ginger extract (5% gingerols) (rhizome) Good
Other Ingredients Very Good

Fillers & Additives

  • Gelatin
  • Purified Water
  • Glycerin
  • Dicalcium Phosphate
  • Dextrin
  • Safflower Oil
  • Soy Lecithin
  • Beeswax
  • St. John's Bread (Carob) (Color)
  • Titanium Dioxide (Color) Medium
  • Sodium copper chlorophyllin (color)
  • Maltodextrin and silicon dioxide
Efficacy Very Poor

Dosage Analysis

  • Biotin 6,000 mcg High
  • Calcium 40 mg Under-dosed
  • Avocado Oil (fruit) 400 mg Under-dosed
  • Coconut Oil (copra) 400 mg Under-dosed
  • Lactase 75 ALU Under-dosed
  • Trimethylglycine (TMG)(as Betaine Hydrochloride) 120 mg Under-dosed
  • Aztec Marigold extract (20% lutein, 12 mg, 1% zeaxanthin, 0.6 mg) (flower) 60 mg Under-dosed
  • Bamboo (Bambusa vulgaris) extract (70% silica, 35 mg) (stem and leaf) 50 mg Under-dosed
  • BioPerine ComplexBioPerine® Black Pepper extract (95% piperine)(fruit), Ginger extract (5% gingerols) (rhizome) 6 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Calories 15
Total Fat 1 g 1%**
Total Carbohydrates 1 g <1%**
Protein 1 g
Biotin 6,000 mcg 20,000%
Calcium 40 mg 3%
Avocado Oil (fruit) 400 mg
Coconut Oil (copra) 400 mg
ConcenTrace® Trace Mineral Complex 200 mg
Enzyme Blend 5 150 mg
Protease 3,959 HUT
Amylase 2,297 DU
Cellulase 773 CU
Lipase 467 LU
Lactase 75 ALU
Trimethylglycine (TMG)(as Betaine Hydrochloride) 120 mg
Aztec Marigold extract (20% lutein, 12 mg, 1% zeaxanthin, 0.6 mg) (flower) 60 mg
Bamboo (Bambusa vulgaris) extract (70% silica, 35 mg) (stem and leaf) 50 mg
BioPerine ComplexBioPerine® Black Pepper extract (95% piperine)(fruit), Ginger extract (5% gingerols) (rhizome) 6 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Purified Water Safe

Dissolves and carries water-soluble ingredients.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Dicalcium Phosphate Safe

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

Dextrin Generally_safe

It is used as a filler, binder, or coating agent.

Safflower Oil Safe

It is used as a carrier oil or source of fatty acids.

Soy Lecithin Safe

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

Beeswax Safe

Used as a coating and to help form softgel capsules.

St. John's Bread (Carob) (Color) Safe

It is used to provide a brown color to supplements.

Titanium Dioxide (Color) Caution

It is used to improve the appearance of the supplement.

Sodium copper chlorophyllin (color) Unknown
Maltodextrin and silicon dioxide Unknown

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$25$24$23$22$21 Mar 12 $22.99$22.99
iHerb
Vitacost

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

Brand Trust Report
Irwin Naturals

Founded 1994 · Los Angeles, California, United States · 130 products · irwinnaturals.com/

Certifications

1 certification
Nsf Gmp Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source
Testing Lab Disclosure — Claimed

Violation History

2 incidents
Lawsuit Deceptively marketing products as 'natural' while they contain synthetic ingredients.2021Source
Prop 65 Lead2011-02-02Source
Related Supplements
Frequently Asked Questions
Is Irwin Naturals Biotin-6000®, 60 Liquid Soft-Gels a good supplement?

Irwin Naturals Biotin-6000®, 60 Liquid Soft-Gels received a product quality score of 72/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 19 active ingredients with 30 servings per container. Of the 12 inactive ingredients, 8 are rated safe and 1 are flagged for review. The manufacturer, Irwin Naturals, holds a brand trust score of 78/100 with 1 verified certifications including Nsf Gmp.

What are the ingredients in Irwin Naturals Biotin-6000®, 60 Liquid Soft-Gels?

Irwin Naturals Biotin-6000®, 60 Liquid Soft-Gels contains 19 active ingredients: Calories (15), Total Fat (1 g), Total Carbohydrates (1 g), Protein (1 g), Biotin (6,000 mcg), Calcium (40 mg), and 13 more. Notable high-dose ingredients include Biotin at 20,000% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Irwin Naturals Biotin-6000®, 60 Liquid Soft-Gels safe to take?

Irwin Naturals Biotin-6000®, 60 Liquid Soft-Gels has been analyzed for ingredient safety across all its components. Of 12 inactive ingredients, 8 are rated safe. 1 ingredient is flagged for review: Titanium Dioxide (Color). 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Irwin Naturals a trustworthy supplement brand?

Irwin Naturals receives a brand trust score of 78/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1994 and headquartered in Los Angeles, California, United States, the company offers 130 products in their lineup. They hold 1 verified certifications including Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Irwin Naturals has 2 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 250,000 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. 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.