To assess the efficacy and safety of eletriptan for migraine headaches in subjects who were not satisfied with rizatriptan therapy

Inclusion Criteria:

• 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

Exclusion Criteria:

• 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