A testes-derived tetrapeptide bioregulator that may support male gonadal function and testosterone levels.
A synthetic tetrapeptide (Lys-Glu-Asp-Gly) bioregulator targeting testicular Leydig cells. Research proposes it normalises steroidogenic gene expression in Leydig cells, supporting testosterone biosynthesis that declines with age through improved cellular gene regulation.
Used in Russian men's health medicine as a supportive bioregulator for age-related hypogonadism, often alongside other endocrine bioregulators. The mechanism proposed involves restoration of normal gene expression patterns in ageing Leydig cells.
Often stacked with other Khavinson bioregulators (Epithalon, Thymalin, Ovagen) as part of comprehensive longevity protocols targeting multiple organ systems simultaneously.