Overview
TB-500 is a synthetic peptide related to Thymosin Beta-4 (Tβ4), a naturally occurring protein involved in cell migration and tissue repair. It is frequently paired with BPC-157 in online 'recovery' discussions.
How It's Thought to Work
Thymosin Beta-4 regulates actin, a protein central to cell structure and movement, which may influence wound healing, blood-vessel formation, and inflammation. TB-500's activity in humans is not well characterized.
What the Research Says
Most evidence is preclinical (animal and cell studies) on wound healing and cardiac tissue. Human clinical evidence for the injectable 'TB-500' sold online is minimal.
Regulatory & Legal Status
Not approved by the FDA for human use. Prohibited in sport by WADA. Sold as a research chemical.
Safety Considerations
Limited human safety data. Unregulated purity in research-chemical markets. Consult a qualified clinician before considering use.