I have been using HGH Sytropin and there are no such side effects that I have felt. It is safe to use and is natural and so you won’t have any adverse effect on your body. However, there are a few things that must be kept in mind and that is Sytropin must not be given to small children and pregnant woman. It is always better to take your doctor’s advice and then only move ahead. However, even if you are buying Sytropin over the counter there won’t be any problem. It can help you to have a good body and a beautiful ageless skin.