Feverfew
Feverfew (Chrysanthemum parthenium) produces small, daisy-like blooms on light-green foliage and is well known as a vasodilator and anti-inflammatory. Studies published in the British medical journal Lancet reported that eating 2–3 fresh leaves daily over time reduced the severity and frequency of migraines, and feverfew also shows potential for relieving arthritis symptoms, though it is contraindicated during pregnancy.