Butterbur
Petasites hybridus
PA-free extracts have decent evidence for migraine prevention and allergic rhinitis.
Traditional use (european-folk): PA-free extracts have decent evidence for migraine prevention and allergic rhinitis.
PA-free extracts have decent evidence for migraine prevention and allergic rhinitis.
Active constituents are under study; evidence ranges from traditional use to preliminary human trials.
- PA-free extracts have decent evidence for migraine prevention and allergic rhinitis.
Evidence strength: stronger human.
- See the evidence level above
- Raw butterbur contains liver-toxic, cancer-causing alkaloids — only use certified PA-free products.
- Non-PA-free products
- Liver disease
- Ragweed allergy
Raw butterbur contains liver-toxic, cancer-causing alkaloids — only use certified PA-free products.
May interact with prescription medications — review with a clinician if you take any.
Use caution in pregnancy, breastfeeding, for children, and with chronic disease unless cleared by a clinician.
Choose reputable, tested suppliers; correct identification is essential for wild-harvested plants.