Biotin
Scored by the Formulate Research Team · Last reviewed July 2026
Overview: Thorne Biotin
Biotin, vitamin B7, supports healthy metabolism, nerves, nails, hair, and skin* 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.*
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
Certifications & Testing
Other Ingredients
Microcrystalline Cellulose, Hypromellose (derived from cellulose) capsule, Calcium Laurate, Silicon Dioxide
Recommended Use
Take 1 capsule one to two times daily or as recommended by your health-care practitioner.
Warnings
ALLERGY WARNING This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. PREGNANCY If pregnant, consult your health professional before using this product. INTERACTIONS Biotin supplementation can interfere with certain lab tests. Consult your health-care practitioner prior to having your blood drawn.
Frequently Asked Questions
What is Thorne Biotin's Formulate score?
Thorne Biotin scores 84 out of 100 (grade A-) on Formulate's ingredient-level rubric, which weighs evidence quality, dose accuracy, bioavailability, transparency, safety, and manufacturing practices.
Is Thorne Biotin worth it?
Thorne Biotin scores 84/100 (grade A-). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Thorne Biotin?
Each serving contains Biotin (16 mg). Serving size: 1 Capsule. 60 servings per container.
How do I take biotin?
Take 1 capsule one to two times daily or as recommended by your health-care practitioner.
Who makes Biotin?
Biotin is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne Biotin third-party tested?
Thorne lists the following certifications and testing for this product: Gluten Free, Soy Free, Dairy Free, Natural Flavors, Natural Colors, Made in USA, GMP Certified, Third-Party Contents Certified.
Related Supplements
Track biotin in your stack
Build a personalized supplement stack free in your browser — no install. Flag dose overlaps and interactions, and keep every product scored against the latest evidence.
Is Biotin right for your goals?
Two questions, then every ingredient graded against what you're actually trying to do — plus what it costs per effective dose.
Build my stack2 questions · free · no account needed to start
Also on iPhone — get the free app
Evidence-based supplement guides, no spam
We send a short digest when new guides drop — nothing else. No affiliate pushes, no sponsored content, unsubscribe anytime.
Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.