HerbButterbur
Moderate evidence supports PA-free butterbur for migraine prevention and allergic rhinitis; limited evidence for asthma. Concerns exist regarding pyrrolizidine alkaloids.
Benefits
- May help prevent migraines and alleviate symptoms of allergic rhinitis and asthma
- exhibits anti-inflammatory
- antioxidant
- and potential antiviral properties.
Key compounds
Petasinsisopetasinneopetasinquercetin glucosidescaffeic aciddicaffeoylquinic acidsisoquercitrinastralagin
May help with
- Historically used for plague
- cough
- fever
- asthma
- headaches
- muscle spasms
- and as an expectorant
- leaves traditionally wrapped butter.
Best for these goals
May help prevent migraines and alleviate symptoms of allergic rhinitis and asthmaexhibits anti-inflammatoryantioxidantand potential antiviral properties.
How to use it
PA-free extracts, capsules
Evidence level
Moderate
Cautions & interactions
Contains hepatotoxic pyrrolizidine alkaloids (PAs); only use certified PA-free products. May cause liver injury, belching, diarrhea, drowsiness, rash, stomach upset, or allergic reactions in sensitive individuals. Avoid during pregnancy/lactation and in liver disease. | Interactions: No major interactions documented; use standard caution. Consult healthcare provider if taking any medications.
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