When taking any drugs, side effects are possible, growth hormone is no exception. There were very few messages from patients who took small doses of hormone (1-2 units per day). The most common side effects are muscle and joint pain or water retention. However, these side effects were reported by patients who had higher doses of HGH use, and after reducing the dosage, the side effects reduced. It is important to understand that each person reacts differently to growth hormone therapy, so you need to do this after consulting a doctor and under his supervision.