Butterbur

Excerpt

Butterbur (derived from the leaves of Petasites hybridus) is an herbal supplement that has been found to be effective in the prophylaxis of adult migraines in multiple studies. Based on these trials, the American Headache Society gave the herb a level A recommendation and declared it effective in preventing migraine headaches. This activity reviews the mechanism of action, adverse event profile, toxicity, dosing, and pharmacodynamics of butterbur and the recommended monitoring of patients taking the drug to avoid adverse effects.