Biotin (B7) and Biotin (B7) for Hair/nails (non-deficient)
Each entry’s own grades, side by side. A grade says how strong the evidence is for one outcome — it does not rank one entry over the other.
Compound or practice
Biotin (B7)
The hair-and-nails vitamin that only helps if you're deficient — and wrecks common lab tests at high doses.
Grade C2 graded outcomesrevised Jul 10, 2026
A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.
Evidence brief
Biotin (B7) for Hair/nails (non-deficient)
Evidence grade D — Only helps if deficient
Grade D1 graded outcomerevised Jul 10, 2026
Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.
Graded in both
Outcomes are matched by name. Two entries can describe the same outcome in different words, so one listed further down may still be graded in the other.
| Outcome | Biotin (B7) | Biotin (B7) for Hair/nails (non-deficient) |
|---|---|---|
| Hair/nails (non-deficient) | Evidence grade DTrivial effectmixedOnly helps if deficient | Evidence grade DTrivial effectmixedOnly helps if deficient |
Graded only in Biotin (B7)
- Deficiency-related hair loss Moderate effectEvidence grade B
Graded only in Biotin (B7) for Hair/nails (non-deficient)
None — every outcome it grades is graded in both.
What each entry says about the other
- Biotin (B7) for Hair/nails (non-deficient)’s entry · Goes with: Read the full Biotin (B7) monograph
Both columns are read from the entries as they stand in this library. A comparison is not advice to take either one, and it is no substitute for a clinician who knows the person.