Would it be possible for me to buy growth hormones legally?
As it is for all hormones, you can’t buy Growth Hormone (GH, somatotropin) by yourself. The only person that could allow you to get some is an endocrinologist, and the only condition is that you really need it (so you should be affected by pituitary dwarfism). The reason why it’s not possible to take GH just as a drug to get taller is that it has many side effects (e.g. hyperglycemy) and that it just wouldn’t work if your bone development has finished. I hope I helped.