Growth Hormones and insulin are usually used by very advanced and athletes who have already gained experience with high doses of anabolic steroids. Insulin should certainly not be used by amateur athletes or steroid novices. Another field of application of growth hormone is the anti-aging field. If you ever choose to use Growth Hormones and Insulin, just inform about the right dosage before you start. There are much companies for hgh arround but not all manufactures quality.