TB-500 is a synthetic peptide of the naturally occuring healing protein present in all cells known as Thymosin Beta 4 (TB4). The effects of TB-500 have been observed to support healing in: tendons, ligaments, muscles and skin. TB-500 aids in recovery by increasing the cellular protein actin. Actin helps to promote cell migration and proliferation. As a result, new blood vessels form and inflammation can be regulated so that healing and recovery are optimized.TB 500 is produced in the thymus gland and is found in high concentrations in wound fluids.