Biotin 10,000mcg

Name: NOW Foods Biotin 10,000mcg
Brand: NOW Foods
Price: 9.99 USD
Availability: InStock

Evidence WeakHair Growth-15 Hype

The most overhyped supplement in the hair category. Biotin deficiency is extremely rare in healthy adults, and supplementation in non-deficient individuals has zero clinical evidence for hair growth. The $4 billion biotin market is built almost entirely on social media hype, not science.

42/ 100

Biorank Score

Independently ranked

42/ 100

Biorank Score

Independently ranked by Biorank Laboratories

Our Verdict

Evidence Weak

Biotin receives the largest hype penalty in our database (15 points) because the gap between marketing claims and evidence is enormous. The $4B biotin market is fueled by influencer marketing, Amazon reviews, and 'hair, skin, nails' branding -- not clinical trials. The product is cheap and relatively safe, but spending money on something with no evidence of benefit in non-deficient people is still a waste. The lab test interference issue is a genuine safety concern at high doses.

Key Findings

Zero published RCTs showing hair growth benefit in non-deficient adults
Biotin deficiency is exceedingly rare in healthy adults eating a normal diet
High-dose biotin interferes with lab tests (troponin, thyroid) -- FDA warning issued
15-point hype penalty -- the largest gap between marketing and evidence in our database

Evidence Analysis

Biotin (vitamin B7) is essential for hair, skin, and nail health -- when deficient. However, biotin deficiency is exceedingly rare in healthy adults eating a normal diet. There are zero published randomized controlled trials demonstrating that biotin supplementation improves hair growth in non-deficient individuals. The few case reports showing benefit involved patients with documented biotin deficiency or rare genetic disorders. The 10,000mcg dose is 33,333% of the Daily Value -- massive overdosing with no evidence of benefit. High-dose biotin can interfere with lab tests including troponin (heart attack marker) and thyroid panels.

Ingredient Breakdown

Ingredient	Dose	Effective Dose	Adequacy	Verdict
Biotin (D-Biotin)	10,000mcg	30mcg (adequate intake) -- no evidence for megadosing		Unnecessary

True Cost Analysis

Properly Dosed -- What You Pay Is What You Get

Listed Price

$0.08/serving

$2.40/month at 1 serving/day

True Cost Per Effective Dose

$0.08/effective dose

$2.40/month for effective dosing

Value Score

Decent value

Where It Falls Short

Zero RCTs showing benefit for hair growth in non-deficient adults. 10,000mcg is 33,333% of Daily Value with no dose-response evidence. Can interfere with lab tests (troponin, thyroid panels) -- inform your doctor. Biotin deficiency is extremely rare. The entire market is built on hype, not evidence. If your hair is thinning, see a dermatologist.