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#5 in Hair, Skin & Nails

Natrol Biotin 10,000mcg Maximum Strength

by Natrol

"Maximum strength biotin from the #1 biotin brand in America — 55,000+ reviews"

Amazon Rating
4.6/5
Reviews
55,000+
Price Range
$8-12
Servings
100 tablets
GMP Certified
Our Editorial Rating
7.5
Good
FormTablet
SubcategoryBiotin (Hair, Skin, Nails)
View on Amazon

Overview

Natrol Biotin 10,000mcg is the best-selling biotin supplement from the #1 biotin brand in America. Each tablet provides 10,000mcg (10mg) of biotin, a B-vitamin essential for keratin production — the structural protein in hair, skin, and nails. Natrol dominates the biotin category with their recognizable purple packaging and consistent quality. The 100-tablet count provides over 3 months of daily supplementation. While the evidence for high-dose biotin in non-deficient individuals is debated, the massive consumer demand and positive reviews have made it a beauty supplement staple.

Key Ingredients

IngredientAmount
Biotin (Vitamin B7)10,000 mcg

Pros & Cons

What We Like

  • #1 biotin brand in America
  • 55,000+ Amazon reviews
  • 100 tablets (3+ month supply)
  • Very affordable
  • Maximum strength dose

What Could Be Better

  • 10,000mcg is 33,333% of daily value
  • Can interfere with lab tests
  • Limited evidence for non-deficient users
  • Single ingredient only

Who Is This For?

Best For

  • Those wanting the #1 biotin brand
  • Budget beauty supplement seekers
  • Hair and nail growth support
  • Those with biotin deficiency

Not Ideal For

  • Those getting regular blood tests
  • Evidence-focused consumers
  • Those wanting comprehensive beauty support

Our Verdict

7.5/10 — Good

Natrol Biotin is the category king with 55,000+ reviews and #1 brand status. The value is excellent and the brand is trusted. Just remember to tell your doctor you're taking high-dose biotin before any blood tests, as it can skew results.

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