I've been suffering about 15 years frequently only discovered sumatriptan about 6 years ago first one made me quite sick but after that I was okish for a while then I started to rely on them every time I had a Migraine they do get rid of the severity of the Headache although you do feel very muggy headed! all the next day and have dizziness a lot but this is only thing that I find works although I believe Botox is very good not sure if you can get it on the national health though and I just would not have the money for it, I tried a few other prescription drugs at the beginning but couldn't tolerate them with the side effects! All the best to my fellow sufferers, these migraines are very debilitating for us all.