TB-500 also known as Thymosin Beta 4 is a naturally occurring peptide. It is found in high concentrations in blood platelets, wound fluid and other tissues in the body. TB-500 is not a growth factor; rather, it is a major actin regulating peptide. TB-500 (Thymosin Beta 4) has been found to play an important role in protection, regeneration and remodeling of injured or damaged tissues. The gene for TB-500 (Thymosin Beta 4) has also been found to be one of the first to be upregulated after a wound occurs.
April 14, 2026