I take K=Pax (?) It's prescription. It is NOT a pain pill so there's no drowsy feeling. I take one, lay down, in an hour it's gone. I've actually had MRI checking for brain aneurysm which was negative. I had 2 different shots at ER after 3 days with one. I should have been knocked out with the first shot. I drove myself home after the second one. That was the last one that has been that bad. That was in 2004. K-Pax seems to work for me. They are expensive, but it supposed to lesson your likelihood of having another one. I think I've had 3 since then. I hope this finds you feeling better. They can make you feel like dieing.