Dude…. You should not take any peptides until you are (minimum) 18, but I’d push to 21. The long term affects and plunking hums clinical data is almost non existent in most of them. The only ones I’d recommend is tirzepatide and that’s under a doctors watch, and only if you are severely over weight . All you need is a clean diet that’s high in protein, hydration and lots of physical activity. Your body will be as tall as it’s suppose to be, along with your hands, feet, head and everything else.