cluster headaches
"It does work really well. I have been dealing with these headaches for about 6 years now and this is the best treatment yet. Headaches are not as frequent, I was having 4-6 a day lasting about an hour, extremely intense. Now it's down to two a day and not as intense. I do also take Imitrex when they are really bad or if it wakes me up in my sleep I noticed drinking a lot of water helps too, I hate these headaches and empathize with all of you."