Treats migraine attacks. Are allergic to pyrethrins. Are pregnant, think you may be pregnant or plan pregnancy in the near future. There may be safer, more-effective treatments. Take any medicinal drugs or herbs including aspirin, laxatives, cold and cough remedies, antacids, vitamins, minerals, amino acids, supplements, other prescription or non-prescription drugs.
Dangers outweigh any possible benefits.
Feverfew has no proven usefulness. It may be dangerous. Keep cool and dry, but don't freeze. Store safely away from children. Don't stop CPR until help arrives.