Research studies show that almost half of all migraine sufferers have low blood levels of Magnesium, which is critical in controlling vasospasms (the contraction and dilation of blood vessels in the brain which occurs during migraines). Migraine sufferers also suffer mitochondrial energy deficiencies, which Riboflavin (Vitamin B2) can improve when given in high dosages. The plant material Feverfew has been shown to reduce platelet aggregation, which can lead to vasoconstriction. All 3 ingredients have been recommended for years by many doctors and top headache specialists based on the clinical studies behind them. MigreLief combines all three of these ingredients into one formula, at the dosages the clinical studies show are beneficial. So, with MigreLief, you need only one product (instead of three separate products), and you take only two tablets per day, versus 4 to 10 tablets per day if taken separately. Plus, MigreLief’s Puracol Feverfew contains high levels of parthenolides and other active components, which other feverfew products can not guarantee Two tablets provide: Puracol Feverfew(Tanacetum parthenium) – 100 mg. Magnesium (Citrate/Oxide 1:1) – 360mg, which is 90% of U.S. RDA* Riboflavin (Vitamin B2) – 400 mg, which is 23,525% of U.S. RDA* *Percentage of U.S. recommended daily allowance