most of its just bs
supplements are mostly a waste of money and time the best way to get bigger and stronger is to work your ass of in the gym eat well and have none of that sugar, caffein, or carbonated crap. if you were to take anything i would recommend a protein supplement just because it...
glutamine
depending on what kind of glutamine and what strength you should probably just follow the directions for adults if you aren't sure the best thing to do is to ask an employee at the store you bought it at.