What is TB-500?
TB-500 is a synthetic peptide related to the active region of thymosin beta-4, a protein involved in cell building and repair. It is popular in the athletic and recovery communities.
As with BPC-157, most of the evidence is preclinical, and human clinical data is limited.
How it is thought to work
Thymosin beta-4 binds actin, a protein central to cell movement, and has been studied for roles in cell migration, blood-vessel formation, and tissue repair. TB-500 is used to target these pathways in research settings.
What the research shows
Animal and laboratory studies have explored effects on wound healing and tissue recovery. Robust human clinical trials are lacking, so claims should be treated cautiously.
We summarize published research and do not make therapeutic promises. A licensed provider can evaluate whether any therapy is appropriate for you. Treat any source promising guaranteed results with skepticism.
Studied uses
- Muscle and connective-tissue recovery
- Flexibility and range of motion
- Often studied together with BPC-157
Legal status in 2026
TB-500 is not an FDA-approved drug and is among the peptides under federal review in 2026. No rule has changed yet, and it would remain prescription-only even if reclassified.
It is also prohibited by the World Anti-Doping Agency, so competitive athletes should be especially careful.
How to access TB-500 legitimately
Access should run through a licensed provider and, where permitted, a licensed compounding pharmacy, never an unregulated supplier.
PeptideForward can match you with vetted telehealth providers who handle these therapies through legitimate channels. The eligibility check takes about five minutes and there is no cost to see if you are a candidate.
Frequently asked questions
Is TB-500 the same as thymosin beta-4? It is a synthetic peptide related to the active region of thymosin beta-4, not the full natural protein.
Is it allowed in sports? No. It is on the WADA prohibited list. Competitive athletes should avoid it.
Does PeptideForward sell it? No. We are an education and matching service only.