Butterbur
Phytotherapymoderate evidenceHeadache & Allergy
Butterbur extract has been studied for migraine and seasonal allergy support. Only PA-free (pyrrolizidine alkaloid-free) products should be used due to liver toxicity risk.
Evidence sources
Dosage
50-75 mg PA-free extract twice daily for migraines; 50 mg twice daily for allergies
Preparation
PA-free standardized extract only (Petadolex brand most studied). Never use raw or unprocessed butterbur.
Traditional Uses
migraine preventionseasonal allergiesasthmaheadache
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