IGR1-LR3 is a breakthrough peptide that has shown great results without many of the side effects or risks of other more commonly prescribed fat loss medications. IGF-1 LR3 inhibits the movement of glucose into the body’s cells which facilitates fat burning and the use of fat in the body for the production of energy. Its effects last most of the day and have made it a preferred variant by a majority of patients and physicians. When IGF-1 LR3 is active in the body, it functions differently in different types of tissues. For instance, in muscle tissue, it makes the muscle more sensitive to insulin’s effects, such as a reduction in fat storage.