Growth hormone, athletic performance, and aging Harvard Health Once daily administration of CJC 1295, a long acting growth hormone releasing hormone (GHRH) analog, normalizes growth in the GHRH knockout mouse American Journal of Physiology Endocrinology and Metabolism American Physiological Society CJC 1295 is one of the several non FDA approved growth hormone releasing peptides that is commonly used in longevity and wellness clinics. This peptide differs from the others primarily due to long serum Sermorelin vs. CJC 1295 vs. Ipamorelin Livv Natural