HerbMate Library

Butterbur (PA-free)

Petasites hybridus

Allergy|Migraine

Butterbur is used mainly for migraine prevention and seasonal allergy support—BUT it must be PA-free (pyrrolizidine alkaloid–free). Non–PA-free products can be liver-toxic.

Key Benefits

Used for migraine prevention routines (PA-free extracts).
Used for seasonal allergy symptom support routines (PA-free extracts).
May help reduce head/sinus pressure in some people.

Common Issues It May Help With

Migraine prevention routines.
Seasonal allergies routines.
Sinus pressure comfort routines.

How To Use (Simple)

Use only labeled PA-free products (capsules/extract).
Follow label dosing; results often require consistent use for weeks.
Do not DIY butterbur tea unless you are 100% certain it is PA-free (most people can’t verify this).

Taste / Notes

Usually taken as capsules; tea is not recommended.

Evidence Level

Some evidence supports PA-free standardized extracts for migraine/allergy support; findings vary by product.

Cautions

ONLY use PA-free butterbur. Avoid in pregnancy/breastfeeding. Use caution with liver disease. Stop if you notice jaundice, dark urine, or severe fatigue.

Interactions

Use caution with liver-metabolized medications. Discuss with a clinician if on multiple meds.

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