Tissue Repair & Recovery. TB-500 is a synthetic fragment of Thymosin Beta-4, a naturally occurring peptide present in virtually all human and anim...
TB-500 is a synthetic fragment of Thymosin Beta-4, a naturally occurring peptide present in virtually all human and animal cells. It has been extensively studied for its role in wound healing, tissue repair, and the regulation of actin — a cell-building protein critical to tissue regeneration and cell migration.
TB-500 promotes healing through its interaction with actin, enabling cell migration to injury sites. It upregulates cell-building proteins and promotes angiogenesis — formation of new blood vessels that accelerate nutrient delivery to damaged tissues. Research also indicates anti-inflammatory properties through downregulation of inflammatory cytokines. Its small molecular size allows high systemic bioavailability.
Important: The evidence base for TB-500 varies by application. Many findings are from preclinical (animal or in vitro) studies. Large-scale human clinical trials may not be completed. Always evaluate the quality of evidence before drawing conclusions.
TB-500 has shown a favorable safety profile in preclinical research. Commonly reported anecdotal effects include mild headache, temporary lethargy, and injection site irritation. Long-term human safety data has not been established through clinical trials.
TB-500 is not FDA-approved and is not on the FDA's Category 1 or Category 2 bulk drug substances list. It is widely available as a research chemical for laboratory use. It is banned by WADA and most professional sports organizations.
These verified suppliers carry TB-500 with third-party COAs and US-based shipping.