Propofol
"Went through a bronchoscopy (lung scope) which took approx. 1 hr 10 min. They gave me a vile of the propofol through an IV. I previously had this done with an endo and both times I was impressed with the post-procedure effects. No nausea, aches etc. I remember everything up till the time I fell asleep, and there was no discomfort! Great stuff."