#thymosins
2 pieces tagged thymosins.
Where the line isWhere research peptides sit on the WADA Prohibited ListFDA status and WADA status are different questions with different answers. Where BPC-157, TB-500, the GHRPs, the GHRH analogues, ipamorelin and Melanotan II sit on the 2026 Prohibited List, and what strict liability means.
The moleculesTB-500 and thymosin beta-4 are not the same moleculeThymosin beta-4 is a 43-residue protein. TB-500 is a seven-residue synthetic fragment of it. Here is the identity of each, the thymosin alpha-1 mix-up, and the status of all three as of September 2026.
Nothing here is medical advice. Everything on this site is supplied for laboratory research use only.