Buy IGF-1 – 10 x 100 mcg/flacon (1000mcg/box) Online EU. Ideal peptide in the context of muscle development the IGF-1 peptide of A-Tech Labs belongs to the family of peptides having a structure identical to that of insulin. This is a highly anabolic hormone that is released into the liver as well as into peripheral tissues in response to GH so that new muscle fibers are built.The main work of IGF-1 is to build new muscle tissue by promoting nitrogen retention and protein synthesis. With proper dosage, IGF-1 has a powerful effect on fat metabolism and helps the body burn fat quickly. It also improves mental functions such as reflexes and learning ability.