IGF LR3 also known as insulin growth factor is a longer and stronger version of IGF 1, which is due to the LR3. It has a longer half-life to 20-30 hours. Bestpeptides IGF LR3 increases muscle mass by inducing muscle hyperplasia in the muscle where it is applied. Some researchers have reported that localised growth is not a myth with IGF. This product is NOT for human consumption and can be harmful if ingested. These products is intended for use as a research peptide only.