Herb comparison
Butterbur (Petasites hybridus) vs Feverfew (Tanacetum parthenium)
Both plants are listed as traditional remedies for 1 of the same condition, which is why they are easy to confuse. Their descriptions and full safety notes are below, free.
Butterbur (Petasites hybridus) is restricted
Preparation amounts are not shown for this herb. It is toxic, restricted, or otherwise unsafe to self-dose - the margin between a traditional dose and a harmful one is too small to publish as reference material. If you are considering it, that conversation belongs with a doctor or a qualified practitioner, not a website.
- About
- Butterbur (sometimes called Petasites) is known for large, rhubarb-like leaves and stems that often grow in damp, marshy areas or moist forest grounds. It contains petasin and isopetasin - compounds that dampen inflammation and can reduce headache frequency, intensity, and duration. Research has found butterbur helpful for hay fever (allergic rhinitis) and migraines, with additional uses for cramps and asthma.Feverfew offers a mild tranquilising effect that makes it ideal for easing the tension and fatigue that often lead to headaches. It inhibits blood platelets from aggregating in the bloodstream and prevents small capillaries from becoming blocked. This action gives feverfew the ability to prevent and treat migraines.
- Safety & precautions
- Pyrrolizidine Alkaloids (PAs): Butterbur naturally contains PAs, potentially toxic to the liver. Some commercial extracts remove these compounds, but caution remains. Duration of Use: Limit use to about six weeks per year to minimize liver risk. General Safety: Not recommended in pregnancy or for extended periods without professional guidance.Fresh feverfew leaves can cause mouth ulcers. Do not use feverfew during pregnancy and avoid it if you are allergic to ragweed.
Safety text above is printed in full and is never abbreviated. For each plant’s complete precautions, drug and food interactions and preparation notes, open its own page - both are free.