CJC-1295 is a peptide hormone composed of 30 amino acids. In the human body it works as an analogue of somatoliberin (a natural stimulator of growth hormone secretion). It acts on the nucleus of the anterior pituitary gland and stimulates the secretion of growth hormone. The substance binds to GHRH receptors, which belong to the group of G protein-coupled receptors. The CJC-1295 version of DAC (Drug Affinity Complex) binds to plasma proteins (albumin), resulting in a significant increase in duration of action, due to the addition of lysine bound to the non-peptide molecule DAC (the version without Il DAC lasts 30 minutes).