migraine
"Imitrex has truly been a miracle for me. I'm 36 and I've been having terrible headaches since as far back as I can remember. No over the counter medication ever made any difference in the pain at all.  5 years ago I was prescribed Imitrex and it has literally changed my life.  It normally takes an hour or two for it to kick in for me, but when it does, it completely takes my headache away.  I have never had any side effects either."