A hormone that is very similar in structure to insulin. Normally a boost in Human Growth Hormone (HGH) is directly related to the production of IGF-1 in the liver. By ingesting IGF-1 by itself, it’s benefits can be felt almost immediately. It works to provide a potent anabolic effect while stimulating muscle cell growth, boosting the immune system, and encouraging healthy joints, bones, and cartilage. In fact, it is well known that the muscle-boosting benefits of HGH come mainly from the elevated IGF-1 levels that come with HGH supplementation.