Hey JL sorry if I mislead you. No supplement will do anything on its own. The type of training you do determines what response your body will have. The hormones your body produces have the building or degrading effect on your body depending on your body's inner environment.

If for instance all you do is sets of 1rm's you won't gain mass but you will gain strength but if you do sets 8-10 at 70-80% max you will gain strength and weight because of the growth hormonal response to the exercise.

Another curious thing, you lot must have been breast fed as babies as I've never heard of kids at 130-145lbs lifting 200-250lbs.