"Feverfew grows naturally throughout Europe and North and South America. Historically, people have used feverfew for fevers, headaches, constipation, diarrhea, difficulty in labor, and dizziness. Today, people use feverfew as a dietary supplement for migraine headache prevention, problems with menstruation, rheumatoid arthritis, psoriasis, allergies, asthma, tinnitus (ringing or roaring sounds in the ears), dizziness, nausea, vomiting, and for intestinal parasites. Topically, people use it as a skin cleanser to reduce or prevent skin infections and for toothaches. The dried leaves—and sometimes flowers and stems—of feverfew are made into capsules, tablets, and liquid extracts, and teas."