Advanced formula for stability of cerebral blood vessels and nerves. MigraMAXX contains three natural remedies for the prevention of these instabilities. Butterbur (Petasites hybridus), standardized for petasins content and processed to remove undesirable pyrrolizidine alkaloids, has emerged as a powerful influence on vascular tone and nerve sensitivity, partly through inhibiting effects on leukotriene synthesis. Magnesium participates in the regulation of vascular tone and reactivity by influencing platelet function, acting as a mild calcium channel blocker, and regulating the effects of serotonin and other neurotransmitters. Riboflavin may help correct certain mitochondrial dysfunctions related to instability of cerebral vasculature. Suggested Use: One capsule, with meals, three times daily, or as directed. Limit to one capsule per day fore every 50 pounds of body weight. Serving Size: 3 Capsules Amount Per Serving:Vitamin B2 (riboflavin) … 200 mg Magnesium (aspartate) … 600 mg Butterbur (root) (Petasites hybridus )* …150 mg *Butterbur extract (14% [sesquiterpenes lactones]). Purified to remove toxic (PA) pyrrolizidine alkaloids. Other Ingredients: vegetarian capsule (hypromellose & water), vegetable stearate Keep in a cool, dry place, tightly capped.