Yeah its me im 14 and want to build muscle I play sports regularly and i strech before and after workouts what is safe to take I take protein shakes already what else can i take without harming myself too much

It won’t do you any good. All you need is a multivitamin. You don’t know how to properly work out yet; don’t even disagree with me and say you do…. I have been working out for longer than you have been alive and once you hit high school, maybe in a year or two, you should take creatine, protein, and a multivitamin.
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Once you get a good base, then blow your money on supplements like that. You wont be harming yourself, it just may be considered useless. Take it from me kid, I have moved up in the world and moved up in bodybuilding…. I now use gear, along with some other supplements. Don’t even think about gear untill you are 21 or over.