- Diagnosis of migraine headache according to International Headache Society criteria
and migraine headaches for at least 1 year
- Eletriptan naive
- Previously treated with rizatriptan and failed to achieve a satisfactory response
within the past 12 months
- Non-migraine headaches on average more than 6 days per month or have less than 24
hours of freedom from headache between migraine attacks
- Migraine attacks that are atypical or chronic daily headaches
- A history of migraine with prolonged aura, familial hemiplegic migraine, basilar
migraine, migrainous infarction, migraine aura without headache, migraine with acute
onset aura