if i am not mistaking, it is just s timed release form of percocet. I ate a 20mg one time and smoked some herb and it was pretty cool. Another time i chewed one ans swallowed another, so i would get the initial burst and the sustained release. Its not smart, i know.
One thing that kills me about painkillers is the cotton mouth. These things give me the worst fucking cotton mouth. I usually drink so much water or iced tea that i barf up huge amounts of liquid. Yummy. I'll stick with G and valium.