I personally know two very early 20's guys that i work with. one started a Dbol only cycle and the other started with weight gainers and a shit load of food each day. They actully trained together. almost a year later the guy that took Dbol went back a step and is not lighter then when he started. The other guy is motoring along.

Moral of the story is slow and steady wins the race each and everytime.

Listen to the advice you have been given, these guys know what they are talking about. Your brother needs a smack!!!