Most patients do fine on a standard triptan, especially now that they are mostly generic and so they don't have to be hoarded. The issue sometimes was that patients would only have a few pills a month, and so waited to treat their migraine until they were sure they needed to take a pill. Triptans don't work well if they are taken too late in the attack.
Hard for me to see this being a runaway success - I suspect they will have fairly modest sales. (The same goes for the sumatriptan patches being developed).
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