available over the counter: no

uses: to treat severe acute migraine headaches; used when other treatments are ineffective

mechanism of action: causes constriction of blood vessels in the brain

side effects
• common: general feeling of warmth or heat, feeling of numbness, tightness or tingling; pain in jaw, mouth, tongue, throat; muscle aches, cramps
• less common: mild chest pain, pressure in chest or neck
• serious: chest pain, wheezing, shortness of breath, puffiness or swelling of eyelids

concerns: rare but serious heart related problems may occur; do not drive or operate heavy machinery