Stay the fuck away from them. I started addys, Ritalin back in December, and I had a hell of a time getting off of them, actually I used Modafinil to get off , and it actually worked. I know I have read that amphetamines have a catabolic effect. My workouts stated to suck, and I just did not feel healthy. I have tried all of the Modafinil, except genuine pharma, but Alpha Pharma was the shit. The worst part of the Adderall thing was after about a week I actually accomplished less. Just my experience bro