For laboratory research use only. Not for human consumption. All compounds referenced in this article are sold by Explicit SARMs solely as reference materials for in-vitro and animal research by qualified professionals. Nothing here is medical advice, and no statement has been evaluated by the FDA. These materials are not intended to diagnose, treat, cure or prevent any disease.
“Thymosin beta 500” isn’t a real molecule. The name blends two different things: thymosin beta-4 and TB-500. These answers clear up the confusion and cover the questions researchers ask most.
What is thymosin beta-4?
A naturally occurring 43-amino-acid protein that sequesters actin monomers, helping to regulate the cell cytoskeleton. It is studied in preclinical models of cell migration, wound healing and blood-vessel formation.
What is TB-500?
A synthetic peptide based on the actin-binding region of thymosin beta-4. It is a fragment, not the full protein.
Do studies on thymosin beta-4 apply to TB-500?
Not automatically. Much of the literature concerns the full-length protein, and findings shouldn’t be transferred to the fragment without direct evidence. Our TB-500 research summary explains more.
How does TB-500 differ from BPC-157?
They are unrelated peptides with different origins and proposed mechanisms. See our TB-500 vs BPC-157 comparison.
What formats are available?
Lyophilized vials (TB-500 5mg and TB-500 10mg), capsules (TB-500 Capsules) and a 1:1 blend with BPC-157 (BPC-157 / TB-500 Blend 10mg).
How do I verify a lot?
A certificate of analysis is available on request through our contact page, and our products are purity-tested by an independent third-party lab. Our guide to reading a COA explains what each section of the report should contain.
Is TB-500 approved for human use?
No. It is not approved by the FDA or any other regulator. TB-500 and thymosin beta-4 appear on the World Anti-Doping Agency’s prohibited list under S2 (peptide hormones, growth factors, related substances and mimetics). It is sold strictly for laboratory research, and we do not provide dosing, administration or usage guidance.