Although triptans are a marked improvement over previous treatment options, many Migraineurs have not been fully satisfied with their results. Some do not achieve full relief from triptans, and the recurrence of Migraines within 24 hours of the first dose has been common.

With the patents on sumatriptan nearing their expiration, both generics of the current forms – injections, tablets, and nasal spray – and other medications containing sumatriptan are now in development and testing. The...