I started primidone, 1/2 (50)mg...1st night did ok. 2nd night last night, did horrible, woke about 2 hrs of sleep and did not know where I was for a while, room looked familiar but could not place myself. after don't know how long, I knew my surroundings (but felt drunk)and went back to sleep. AM was ok after coffee and 2 hrs later needed nap. Napped for 3 hrs and feel shakey. I was taking clonzapam 1/2 ( 1 mg) for about 8 mos. for anxiety and shaking, last night was first time I didn't take it. Will this feeling go away in time? Does this new medicine take a while to work into my system? My Dr. prescribed 1/2 tablet for a wk. then 1 whole, for wk. and work my way up to 2 tabs. I take this med. for tremors not seisure.