Hello again Patti. Here is some info I sent to someone
in my family who asked the same question.
Regards. Peter Reinhard
(just search on feverfew)
_______________________________________________
Feverfew

Feverfew Herb Tanacetum Parthenium

Therapeutic profile: an anti-inflammatory and vasodilating herb particularly useful as a remedy and preventive for migraines headaches. Primary uses: as specific in the treatment of migraines; as part of a formula to relieve arthritic inflammmation; secondary uses: as part of a relief combination for painful or sluggesh menstruation; as part of a formula for tinnitus or vertigo.NOTE; DO NOT USE WHEN PREGNANT AS THIS HERB MAY START UTERINE CONTRACTIONS.(Source:"How To Be Your Own
Herbal Pharmacist" by Linda Rector-Page N.D., Ph.D.)

A Valuable herb in the treatment of migraine headaches as well as relieving some of the accompanying symptoms such as nausea, depression, and arthritic pain due to inflammation. Feverfew may also help ease dizziness, tinnitus, arthritis in its active inflammatory stage, and painful or sluggesh menstruation. CAUTION: DO NOT USE DURING PREGNANCY BECAUSE OF THE STIMULATING ACTION ON THE
WOMB.(Source: "Naturopathic Handbook of Herbal Formulas" by Herbal Research Publications Inc.)

Relieves headaches, arthritis, indigestion,colds, fever and muscle tension. Eliminates worms, Stimulates the appetite, increases fluidity of lung and bronchial tube mucus, stimulates uterine contractions and promotes menses.(Source: Prescription for Nutritional Healing by James F. Balch,M.D. & Phyllis A.
Balach, C.N.C.)

Feverfew preparations are derived from the leaves and flowers of a bushy perennial (tanacetum parthenium) and used chiefly as a remedy for migraine headaches. Clinical trials in Britain indicate that a dosage of 50 to 100mg daily of the dried leaves effectively prevents or significantly decreases the severity of migraine attacks for many people. Herbalist also use feverfew for its anti-inflammatory properties in the treatment of arthritis, as an antispasmodic to relieve menstrual cramps, and (as the name implies)a febrifuge. It is sold dried and in capsules, concentrated drops. tictures, and extracts.(Source: 1996 Natural
Health Handbook from the editors of "Natural Health")