Also known as: TP-5, thymopoietin pentapeptide, Arg-Lys-Asp-Val-Tyr
Thymopoietin-derived pentapeptide studied for T-cell differentiation, immune augmentation, and autoimmunity models.

PSO vial render · Scientific images from Wikipedia · Tap to enlarge
Chemical compound
Thymopentin is a thymic polypeptide derivative which interacts with T cells and acts as an immunostimulant. As such, it was used in several clinical studies in the early years of the AIDS pandemic. Thymopentin helped to improve immunological condition in some patients for a brief time under specific treatments. It has also been investigated more recently for applications in the treatment of rheumatoid arthritis, and lung cancer.
Thymopentin is a thymic polypeptide derivative which interacts with T cells and acts as an immunostimulant. As such, it was used in several clinical studies in the early years of the AIDS pandemic. Thymopentin helped to improve immunological condition in some patients for a brief time under specific treatments. It has also been investigated more recently for applications in the treatment of rheumatoid arthritis, and lung cancer.
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.
Thymopentin (also known as TP-5, thymopoietin pentapeptide) is studied within the immune modulation research community. Thymopoietin-derived pentapeptide studied for T-cell differentiation, immune augmentation, and autoimmunity models.
Last updated October 28, 2026
Research status: active. Thymopentin appears across immune modulation research forums and academic literature. Researchers note this compound falls in the immune category.
Last updated October 28, 2026
Share your opinion or research experience with Thymopentin. 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.