Does this happen right as you start drifting off to sleep? I was on paxil cr 12.5 for 4 days in July, and on night 4 soon after falling asleep I woke with a start with my mind racing and feeling like my body was burning up. It was terrifying! I quit the paxil right away, but for weeks after this I was unable to fall asleep. I would be OK lying there but as soon as I started drifting off it felt like I was being electrocuted and would sit bolt upright wide awake again until I would calm down in 15-20 minutes. Then it would happen again and again. Even with 2 mg of xanax in me it would happen. Finally my doc gave me ambien which knocked me out. This lasted for almost a month and I really thought I was dying, somedays I wished I would. Anyway, in August I went on effexor...no really nasty side effects but not sure if it really helped as I am only recently feeling a little better. Maybe it is the working out and fish oil that I started in Sept.
About the paxil, my doc gave me 12.5 to start with for a week and then 25mg after that. I never took a 25. He said that 12.5 wasn't enough to do anything (good that is) Sure freaked me out though.
Hope you get some relief,