Feverfew (Tanacetum parthenium) may be helpful for treating and preventing migraine headaches, preventing blood clots, easing arthritis inflammation, menstrual problems, muscle tension, pain, colds, flu, fevers, digestion disorders, promoting menses and stimulating uterine contractions.Feverfew (Tanacetum pathenium) Studies at the London Migraine Clinic have increased interest in the parthenolide in Feverfew. Feverfew helps maintain normal blood vessel tone. Parthenolide also helps normalize the function of platelets in the blood system by inhibiting platelet aggregation, reducing serotonin release from platelets and blocking the formation of pro-inflammatory mediators.