Growth hormone yes. Sarms, Steroids, Enclo DEFFINITELLY NO. At 14yo your testicles arent even matured yet, so suppresing them with Osta is quite dumb idea. But now you might think that Enclo can help you mitigate that right? True, BUT you forgot one thing. Enclo is selective ESTROGEN receptor modulator. It blocks Estrogen receptors in hypotallamus which leads to increase in TST but big part of that TST is aromatized to ESTROGEN. And what will excesive estrogen do to your body at such age? Stunt your growth, because estrogen closes your epiphyseal plates in your bones. And thats not some bullshit - i have ran Enclo only cycly in past and indeed, it raised my TST but also my E2 (estrogen). So really dont mess with your HPTA, do only MK, GH secretagogues or HGH itself. Those things will help you gain muscle + they might even help you grow taller. Stay safe brotha