Tesamorelin is a chemically altered growth hormone-releasing hormone (GHRH) analog, that similar to the original is made of 44 amino acids. This peptide is a trans-3-hexanoic acid version of natural GHRH. The trans-3-hexanoic acid group is added to the N-terminus, while the C-terminus is amidated and acetylated. Tesamorelin appears to mediate the positive influence of GHRH and other GHRH analogs such as GRF (1-29), CJC-1295, and Sermorelin. The trans-3-hexanoic acid modification may increase its stability and half-life. Both Tesamorelin and CJC-1295 appear to maintain the physiological activity of GHRH, without disrupting the physiological rhythm of GH release.
