Biotin
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
Certifications & Testing
Other Ingredients
Hypromellose, Water
Recommended Use
Suggested Use: Take 1 capsule daily as needed, preferably with meal.
Warnings
Warning: Not intended for use by persons under the age of 18. Keep out of the reach of children. If you are pregnant, breast feeding, have known medical conditions (including kidney or liver disease) or are taking prescription or OTC medication(s) consult with your health care practitioner before using this product. Discontinue use two weeks prior to surgery.
Frequently Asked Questions
What is NutraBio Biotin's Formulate score?
NutraBio Biotin scores 87 out of 100 (grade A) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is NutraBio Biotin worth it?
NutraBio Biotin scores 87/100 (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 NutraBio Biotin?
Each serving contains Biotin (5000 mcg). Serving size: 1 Vegetarian Capsule(s). 90 servings per container.
How do I take biotin?
Suggested Use: Take 1 capsule daily as needed, preferably with meal.
Who makes Biotin?
Biotin is made by NutraBio. See Formulate's full grade and product lineup for NutraBio on its brand page.
Is NutraBio Biotin third-party tested?
NutraBio lists the following certifications and testing for this product: Vegetarian, Gluten-Free.
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.