i weigh 140 pounds and i was doing oxy for like a month or two at like 20mgs a day. i must've had some tolerance. i'd never really take more than 25mgs... one day i kicked that up to like 40mgs and i was literally IN THE CLOUDS, like all i could see was light and clouds lying in bed in mostly the dark.... the next day i felt so bad. it was like being sick with the flu and my body just hurt really bad worse than i ever had feeling sick. it was actually similar to getting hit by a car with how off my body felt.. like i could barely move when i was on it and felt like trash the next day... so i think like 15mgs through out the course of a couple hours is probably a decent amount for a smaller person with out a tolerance. i was doing 20mgs for a while and wasn't really getting a tolerance. it definitely felt good with getting stoned... at 40mgs, i guess that was cool to do one time, but with the withdrawl, hell no to that again. with how bad i felt, i really feel like i must've been close to overdosing.