Ambien works for me, and somehow eliminates the middle of the night symptoms. I take 5 mg for the symptom help alone, as sometimes I could fall asleep without it. If I can't fall asleep with 5 mg, I take 5 more. If I awaken during the night, it's from the Ambien wearing off, now.........not PD symptoms. And, in that case I take another 5 mg. I have no "hangover" the next day. Hope you get help.........sleep deprivation can add another layer of difficulty to an already difficult life! M.Dawn 56/6