- Consented males and nonpregnant females using adequate contraception, between 18 and 55 years of age, with at least 1-6 migraines per month for past 6 months. Subjects will be excluded for confirmed or suspected ischemic heart disease, uncontrolled hypertension at screening; a history of epilepsy or structural brain lesions which lowered the convulsive threshold; confirmed or suspected cardiovascular, cerebrovascular, peripheral vascular, congenital heart disease, or ischemic bowel disease; impaired hepatic or renal function; basilar or hemiplegic migraine. Other exclusion criteria included use of a monoamine oxidase inhibitor within 2 weeks before screening; ergot prophylactics in past 3 months; anticoagulants; smoking more than 10 cigarettes/day, evidence of alcohol or substance abuse; GI bleeding disorders, inflammatory bowel disease; or any concurrent medical or psychiatric condition that in the investigator's opinion could affect interpretation of efficacy or safety information or which otherwise contraindicated participation in the study.