The true question is... why risk it?
I'll go out on a limb and assume your not competing on bodybuilding contest yet. So what would you need it for? To boost your ego? Brother, ego is a killer of more teens then anything else (trust me, I know).
If you want to take slin to bust your ego and be one of the tough guys, it is especally dangerous.
Heres a story from my area a year or 2 ago. I'll tell you the abstract parts, the facts arent as important in my oppinion. Consider the following...(sorry in advance if I get too deep here)
Theres a little kid whos 16 or so. 110 lbs soaking wet. No one really notices him, he keeps to himself. Day after day he gets lonlier, and more depressed. He has few friends, and is outcast by most of the croud. Couldn't get a date fot the life of him. One day after being picked on, he decides hes had enough. So like many of us here, he starts to lift and eat more. However, his body isnt growing fast enought to compete with his mind, which is loosing its grip on reality more and more each day. So he decides to start some test. He reads up on it, and sets a decent dosage. Still, he isnt satisfied with the new person he has created, not knowing hes the same exact person as he was before he started. One day he decides to take a **** load all at once, and BANG, hes in the hospitol for a while. Endocrine system destroyed, stunded growth, and destroyed self image.
.... basic story of my moms friends son.
I dont mean to be an ass, but this might be you, noctorum. Hell, you might be twice the size of me and just looking for something to get over the hump. Who knows. But remember, nothing you can take is going to work "magic," especally at our age.