#thymosins
3 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.
- Where the line isApproved, investigational, or neither: a status table for 27 peptidesOne table, three statuses. Which peptides have an FDA-approved product, which are in a sponsor's trial program, and which have neither, with the compounding category and WADA line for each, as of September 21, 2026.
Nothing here is medical advice. Everything on this site is supplied for laboratory research use only.