TB-500 is a synthetic peptide corresponding to a region of thymosin beta-4, a 43-amino-acid protein involved in actin sequestration, cell migration, and angiogenesis. It is used in compounded injectable protocols (often 2.5 mg twice weekly) for musculoskeletal recovery, often stacked with BPC-157.
Preclinical models show accelerated wound closure and tendon repair. Human RCT evidence for athletic injury is sparse. TB-500 is prohibited in sport by WADA. Compounded product requires licensed pharmacy sourcing.
CLYR Health offers TB-500 as a peptides preview SKU for off-label recovery protocols under prescriber supervision.