CJC-1295 DAC and CJC-1295 (also known as Modified GRF 1-29) are both Releasing Hormones (GHRH). Their action in the human body is identical but the difference between the two peptides are the span of the half-life. Modified GRF 1-29 and Sermorelin have a very short acting half-life of about 30 minutes, while CJC-1295 DAC has a half-life that can last up …