IGF-1 belongs to the peptide family which has a same structure and size as insulin. It is a highly anabolic hormone that is released in the liver as well as in the peripheral tissues in response to the GH so that a new muscle could be built. The main work of IGF-1 is to build new muscle tissues by promoting nitrogen retention and protein synthesis. IGF-1 not only makes muscle fibers bigger, but also makes more of them. IGF-1 has potent effect on fat metabolism and helps the body to burn fat rapidly. It also improves mental functions such as reflexes and learning ability.
IGF-1 has a very sensitive and unstable property thats why it is used rarely because it has a very short term life of only 10 minutes. Thats why a substitute of IGF-1 referred to as Long R3IGF-1 or IGF-1 LR3 is used. IGF-1 LR3 has longer life. IGF-1 life time is increased from 10 minutes to hours in IGF-1 LR3, so that the users can get away using a smaller amount of IGF-1 LR3 and does not have to use it as frequent. Long R3IGF-1 is in the form of lyophilized powder form or already reconstituted form.
IGF-1 LR3 is widely used by bodybuilders, but it not recommended for inexperienced bodybuilders....