Biotin
Scored by the Formulate Research Team · Last reviewed July 2026
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
| Ingredient | Amount |
|---|---|
| Biotin10 systematic reviews · 32 randomised trials | 5000 mcg |
| Calcium702 systematic reviews · 3290 randomised trials | 145 mg |
Certifications & Testing
Other Ingredients
Calcium Phosphate, Microcrystalline Cellulose, Hydroxypropyl Methylcellulose, Water, Magnesium Stearate, Silicon Dioxide
Recommended Use
Suggested use: Adults take 1 capsule once a day with a meal or as directed by your qualified healthcare professional.
Warnings
Warning: During use, advise your medical professional that you are taking biotin before any blood tests. Consult a healthcare professional before using this product if you are pregnant, nursing, under the age of 18, are taking medication or have a medical condition; if adverse reactions occur, discontinue use. Consult a healthcare professional before using this product if you are pregnant, nursing
Frequently Asked Questions
What is Jarrow Formulas Biotin's Formulate score?
Jarrow Formulas Biotin scores 84 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 Jarrow Formulas Biotin worth it?
Jarrow Formulas 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 Jarrow Formulas Biotin?
Each serving contains Biotin (5000 mcg), Calcium (145 mg). Serving size: 1 Capsule(s). 100 servings per container.
How do I take biotin?
Suggested use: Adults take 1 capsule once a day with a meal or as directed by your qualified healthcare professional.
Who makes Biotin?
Biotin is made by Jarrow Formulas. See Formulate's full grade and product lineup for Jarrow Formulas on its brand page.
Is Jarrow Formulas Biotin third-party tested?
Jarrow Formulas lists the following certifications and testing for this product: Gluten-Free, Non-GMO, Vegan, Vegetarian, Dairy-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.