Butterbur for Migraine prevention and Butterbur
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.
Evidence brief
Butterbur for Migraine prevention
Evidence grade B — PA-free extract
Grade B1 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.
Compound or practice
Butterbur
Solid evidence for migraine prevention and allergic rhinitis — but only PA-free products are safe.
Grade B2 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.
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 | Butterbur for Migraine prevention | Butterbur |
|---|---|---|
| Migraine prevention | Evidence grade BModerate effecthighPA-free extract | Evidence grade BModerate effecthighPA-free extract |
Graded only in Butterbur for Migraine prevention
None — every outcome it grades is graded in both.
Graded only in Butterbur
- Allergic rhinitis Moderate effectEvidence grade B
Conditions
Only in Butterbur for Migraine prevention
None.
Only in Butterbur
- Migraine ImprovesEvidence grade B
What each entry says about the other
- Butterbur for Migraine prevention’s entry · Goes with: Read the full Butterbur 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.