everfew is an herb whose name comes from the fact that the ancient Greeks and many later societies used it as a treatment for fever.

Researchers at the City of London Migraine Clinic found that feverfew eliminated about two-thirds of migraine in a selected group of headache patients, which is similar to the effectiveness of most migraine drugs.

However, while some people get a pronounced effect, others get none at all. Averaging everyone together, it eliminates about one-fourth of all headaches.

This does not mean that it will eliminate precisely one-fourth of your headaches. It will more likely either have a much more noticeable effect or no effect at all.
Feverfew is sold at all health food stores.

The amount that has been shown to prevent migraine in research studies ranges from 50 to 114 milligrams per day.

However, most practitioners use capsules containing about 250 milligrams of a standardized-potency feverfew, recommending one capsule per day taken on an empty stomach. If find fresh leaves, the usual dose is two to threeleaves per day.

Thousands of people have used feverfew over long periods with no apparent ill effects, and research studies have shown no serious risks.

However, there has been little effort to systematically look for side-effects over prolonged periods. I would encourage you to avoid it if you are (or might be) pregnant; there is no indication that it causes birth defects, but not enough data are in to be sure.

Also, people with clotting disorders or who are taking anticoagulant medicines should consult with their doctors about taking feverfew.