IGF-1 LR3

IGF-1 LR3 is a synthetic peptide and lengthened analogue of human insulin-like growth factor 1. With a half-life of between 20 and 30 hours it is three times as effective as HGF1. Human insulin-like growth factor 1 is a protein hormone, and in the body, it’s produced naturally in the liver. It functions a little like insulin. Its effect is to move nutrition into the muscle cells.a