Like your mom, I am cery cautious about what I allow my son to put into his body, I've done quite a bit of research and I allow him to use the following: Metabolic Drive, Surge, BCAA, Beta-7, and ZMA. I'm not sure how old you are, my son is seventeen now, but he was sixteen when he started this stuff.
I am also contemplating letting him take Rez-V, it is said to have many health benefits.
One condition I placed on my son before I committed to buying these supplements for him was that he eat properly, he followed the Seven Habits Of Healthy Eating exactly to the letter for about 4 weeks then started slowly tweaking it a bit here and there to fit his needs as prescribed in the DVD. I can promise you, if you put your diet first and foremost and then add supplements as needed you will see far better results. You can learn everything you need to know about proper eating habits right here on this website.