To evaluate the efficacy of early intervention (dosing within 2 hours of onset of the migraine attack) with eletriptan 40mg on mild versus moderate to severe pain intensity of migraine.

Inclusion Criteria:

• Diagnosis of migraine with or without aura according to the recent IHS criteria.
• Migraine headaches must have been present for more than one year.
• History in the last 3 months of 1 to 4 acute attacks of migraine headache per month.

Exclusion Criteria:

• Subjects with current or past history of coronary artery disease.
• Pregnant or breastfeeding women.
• Subjects who have chronic daily headaches.