What TB-500 is
TB-500 is a thymosin beta-4 fragment. A synthetic fragment corresponding to the actin-binding region of thymosin beta-4, studied for actin sequestration, cell migration and angiogenesis.
Class and mechanism
TB-500 is a thymosin beta-4 fragment. A synthetic fragment corresponding to the actin-binding region of thymosin beta-4, studied for actin sequestration, cell migration and angiogenesis.
Where it sits
Research peptides are short amino-acid sequences supplied either as a lyophilised powder in a sealed vial or already in solution in a pre-filled pen. Which of the two you receive changes how the item is stored and how long it stays usable once opened.
Other names
TB-500 is also written as Thymosin Beta-4 fragment and TB4. The same molecule appears under more than one name, which is worth knowing when comparing listings between suppliers.
Others in the research peptides range
TB-500 sits in the research peptides group. The compounds below share that grouping, which is the useful starting point when comparing one against another: same group means the comparison is like for like, different group usually means it is not.
| Compound | Class | Listings | From |
|---|---|---|---|
| BPC-157 | Pentadecapeptide | 2 | £16 |
| GHK-Cu | Copper tripeptide | 2 | £30 |
| KPV | Alpha-MSH tripeptide fragment | 1 | £20 |
| LL-37 | Antimicrobial host-defence peptide | 1 | £60 |
| Thymosin Alpha-1 | Immunomodulatory peptide | 1 | £65 |
| Glutathione | Endogenous tripeptide antioxidant | 1 | £95 |
Is it held in UK stock?
Stock held in the UK ships domestically, with no customs step. The product page carries live stock rather than a cached figure.
Quanta Pharma TB500 5mgin stock£25- SerenQ TB500 10mg Peptide Penin stock£55
Availability checked 2026-09-09. The product page carries live stock.