Propofol
"71 year old female, 3rd colonoscopy.  First 2 with versed, no side effects.  This one, with propofol.  Went out like a light, no problems, but after the procedure they had a hard time waking me up, and my head, upper body, right arm were shaking, convulsing.  It seemed seizure-like, but nurses said it was not a seizure.  This continued for almost 2 hours.  They gave me versed to bring it under control.  The shaking continued.  Then they tried benadryl.  Finally about an hour after the benadryl the severe shaking began to subside.  So much for quick wake up and release.  I was in recovery for over 3 hours. The doctor tried to tell me it must be pre-parkinsons symptoms.  No way.  Couldn't sleep last night, and feel wired and shaky today."