This is taken from
http://www.geocities.com/gainheight/Growtaller.htm
Manmade growth hormone are administered by a series of injections (which could cost anywhere from $12,000 to $18,000 a year), and is prescribed after careful evaluation of a person's growth pattern and growth potential. These injections may help you grow, but inducing growth too quickly may inhibit later growth. Growth hormone may produce various other side effects, such as: high cholesterol, diabetes, liver abnormalities, increased tissue stiffness, carpal tunnel syndrome, musculoskeletal disease, neuropathy, allergic reactions, pancreatitis, hyperglycemia, visual deterioration, headaches, vomiting, increased liver enzyme levels, increased sweating, edema, pain in general and back pain specifically. Make your choice. Furthermore, if you receive these injections, your body will adapt to this drug, and will refuse to produce natural growth hormone after you stop receiving injections
Did you get the last part? your body refused to produce it's own natural GH after the injections so you start aging as quickly as an 80 year old who's GH level is at minimum.