available over the counter: no

uses: to treat severe, acute migraine headaches

mechanism of action: not known

side effects
• common: hot flashes or chills, numbness, dry mouth, dizziness
• less common: indigestion, nausea, muscle ache
• serious: rare; heart attack, chest pain, severe abdominal pain, shortness of breath, wheezing

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