Huh, that is wierd you felt okay for an hour then w/d's came back after an hour, especially since you took 16mg! As said Bupe is a wierd drug, I've been prescrbied 16mg a day for about a year and a half now, doctor now just talking about tapering(only reason is because I only have 6 months on my insurance) now subs have helped me alot, not gonna lie, but I wish they were better with helping cravings...have been chipping this week with Oxy and my last dose was of Sub was on Saturday, after I went back to the Sub I ended up just taking 2/3mg(somewhere around there) and was not sick at all, and in a way felt more sedated instead of the engery that i would get from taking a full stip of 8mg...I dunno, wierd drug is all I can say, would much rather be on Methadone for maintaince as this would most definalety stop me from chipping, as there would be no damn point to it, only thing that stopped me from the clinic was just the driving distance and working around my job. But speaking of being the wierd drug part, after taking 8mg a day for the past year pretty much, I actually felt some kind of light 'buzz'(though not euphoric as other opiates of course) after not taking any for 5 days, and during those days I was gobbling down percocets...but yes, wierd drug and indeed, and after that I am determined to get my dose down to 2/3mg a day pretty damn soon, like 2mg in the morning and 1mg at night/evening time, atleast that way I can feel my dose a little bit and not just feel the same and blah all the time..though I did feel some kind of w/d cuz as you said about the sex drive thing, I was getting boners alot that day...