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Science-Backed
Curated by
20 Experts
Free Delivery
in the US
Best-Price Guaranteed
Science-Backed
Curated by 20 Experts
Free Delivery in the US
Best-Price Guaranteed
Science-Backed

Science-Backed

Clinically proven formulas, 3rd-party verified

Curated by 20 Experts

Curated by 20 Experts

A board of MDs, PharmDs & PhDs hand-selects every product

Free Delivery in the US

Free Delivery in the US

Fast, carbon-neutral shipping in 1–2 business days

Best-Price Guaranteed

Best-Price Guaranteed

Find it cheaper? We refund 2× the difference (*)

Supply size: 30 days.

A high concentration of biotin, a B vitamin that promotes fingernail strength and supports skin, hair, and nerve health, as well as healthy blood sugar metabolism.
Biotin is an essential cofactor for numerous enzymes in the body involved in the metabolism of fats, carbs, and amino acids.
Who can benefit from Thorne's Biotin:
• An individual taking an antibiotic that disrupts biotin synthesis in the gut
• A person on an anti-seizure medication
• An individual who has been on long-term IV nutrition
• Anyone with a digestive condition that decreases the absorption of nutrients from food
• Those needing additional support for glucose metabolism*
• People with an inherited enzyme deficiency

Signs of a low biotin level:
• Dry, scaly skin
• Thin brittle nails
• Dry, brittle hair
• Hair loss
• Cracks in the corners of the mouth
• Swollen, painful tongue
• Dry eyes

This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants, such as heavy metals, pesticides, and microorganisms.
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