Renal impairment. Concomitant use w/ SNRIs & SSRIs, potent CYP3A4 inhibitors eg, ketoconazole, itraconazole, erythromycin, clarithromycin, josamycin & PIs (ritonavir, indinavir & nelfinavir); other 5-HT
1 receptor agonists. Not for management of hemiplegic, ophthalmoplegic or basilar migraine, & treatment of atypical headaches. CV evaluation prior to commencement of therapy. CAD patients (HTN, diabetes, smokers, men >40 yr, post-menopausal women & strong family history of CAD). Patients w/ heart failure & chronic daily headache. Do not use prophylactically. May affect ability to drive or operate machinery. Adolescents 12-17 yr & childn 6-11 yr. Pregnancy & lactation. Elderly >65 yr.