Sumatriptan
cluster headaches
"Had clusters 37 years now. I've tried literally EVERYTHING out there. The only thing that works for immediate relief is imitrex injections. If med takes too long (nasal or pill), it simply doesn't work. Gabapentin (sp) regime should be started immediately, they eventually stop the nerve from spasms. Imitrex is now available generic (sumatriptan), however, still expensive. I pay $75/shot only available as a two-pack."