Thymopentin is an immunostimulant. It had been used in several clinical studies in the early years of the AIDS pandemic (from 1983 to 1985).
Thymopentin, also known as TP-5, is a synthetic derivative of thymopoietin, a thymic hormone, and has immunoregulatory properties. Thymopentin interacts with T cells, reduces endocrine and behavioral responses to experimental stress. It is also found to increase the number of cells undergoing apoptosis in irradiated cells and selectively bind to apoptotic cells.http://www.creative-peptides.com/product/thymopentin-acetate-item-10-101-33-107.html