Start with the evidence.

The linked tendon study investigates cellular and tissue responses; a single established clinical mechanism is not demonstrated.

• Clinical benefit and long-term safety are not established by the evidence curated here.
• Identity, purity, formulation, and route affect risk; a research label is not evidence of suitability for human use.

Evidence for full-length thymosin beta-4 cannot automatically be assigned to the fragment sold as TB-500.

• Clinical benefit and long-term safety are not established by the evidence curated here.
• Identity, purity, formulation, and route affect risk; a research label is not evidence of suitability for human use.