Also known as: Lys-Glu-Asp-Gly, KEDG tetrapeptide, testis bioregulator
Testicular tetrapeptide bioregulator studied for gonadal function restoration in aging preclinical models.

PSO vial render · Scientific images from Wikipedia · Tap to enlarge
Testicular tetrapeptide bioregulator studied for gonadal function restoration in aging preclinical models.
Community Reports - Not Medical Advice
The following is aggregated from public forums, Reddit, and research communities. These are anecdotal reports from researchers only - not verified clinical data and not a recommendation of any kind.
Testagen (also known as Lys-Glu-Asp-Gly, KEDG tetrapeptide) is studied within the sexual health and hormonal research community. Testicular tetrapeptide bioregulator studied for gonadal function restoration in aging preclinical models.
Last updated October 28, 2026
Research status: limited. Testagen appears across sexual health and hormonal research forums and academic literature. Researchers note this compound falls in the sexual health category.
Last updated October 28, 2026
Share your opinion or research experience with Testagen. Comments are reviewed before appearing.
All products listed on Peptide Stores Online are for in-vitro laboratory and educational research purposes only. Not for human or animal consumption. Not evaluated by the Food and Drug Administration. Not intended to diagnose, treat, cure, or prevent any disease or condition. All sellers and buyers agree to full research-use-only terms at account creation. Peptide Stores Online assumes no liability for misuse of any product listed on this platform.