I had been taking Imitrex for almost 20 years and it was effective almost 90% of the time. One of my three daughters also suffers from migraines and Imitrex was also effective for her. Apparently, the patent for Imitrex expired 1 or 2 years ago, because that is when we started getting generics from our pharmacy and my insurance won't pay for brand name drugs if generics are available. We have both found that the generics we have received have not been as effective as Imitrex. They don't relieve the migraine as quickly or as reliability as Imitrex. The two generic brands of sumatriptan we have used are Dr. Reddy and Cobalt Laboratories. Has anyone found a particular generic as effective for them as Imitrex?