Rankings / Essentials — Vitamins & Minerals
Vitamin B7 (biotin)
Essentials · Vitamin
Tier B
Bottom line
Read Off Label grades Vitamin B7 (biotin) as B (6.7/10) based on strong evidence, low benefit magnitude, and a low-med-risk safety profile.
The lab interference is the actual clinical risk — high-dose biotin can mask MI on troponin assays and produce factitious thyrotoxicosis-like TSH/T4 patterns.
Typical use: 30 mcg/day RDA; 2. — OTC.
What this is
The lab interference is the actual clinical risk — high-dose biotin can mask MI on troponin assays and produce factitious thyrotoxicosis-like TSH/T4 patterns. Always ask about biotin before unusual thyroid panels. Hair/nail benefit data is essentially absent in non-deficient subjects.
Mechanism
Cofactor for carboxylase enzymes (acetyl-CoA carboxylase, pyruvate carboxylase, propionyl-CoA carboxylase, beta-methylcrotonyl-CoA carboxylase) — central to fatty acid synthesis, gluconeogenesis, and BCAA catabolism
Dose & route
30 mcg/day RDA; 2.5-10 mg/day typical supplement; high doses common in 'hair, skin, nails' products
Citations
- https://www.fda.gov/medical-devices/safety-communications/update-fda-warns-biotin-may-interfere-lab-tests-fda-safety-communication
- https://pubmed.ncbi.nlm.nih.gov/30516381/
- https://ods.od.nih.gov/factsheets/Biotin-HealthProfessional/
Links go to the source. If a link is dead or you want something re-checked, let me know.
Common questions
- Does Vitamin B7 (biotin) work?
- Read Off Label rates the evidence for Vitamin B7 (biotin) as Strong and the benefit magnitude as low, producing an overall grade of B (6.7/10). The lab interference is the actual clinical risk — high-dose biotin can mask MI on troponin assays and produce factitious thyrotoxicosis-like TSH/T4 patterns.
- Is Vitamin B7 (biotin) safe?
- Vitamin B7 (biotin) has a low-med risk profile in published human data. Legal status: OTC. This is not medical advice — see the disclaimer.
- What is the typical dose for Vitamin B7 (biotin)?
- 30 mcg/day RDA; 2.5-10 mg/day typical supplement; high doses common in 'hair, skin, nails' products
- How does Vitamin B7 (biotin) work?
- Cofactor for carboxylase enzymes (acetyl-CoA carboxylase, pyruvate carboxylase, propionyl-CoA carboxylase, beta-methylcrotonyl-CoA carboxylase) — central to fatty acid synthesis, gluconeogenesis, and BCAA catabolism
This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.