What are the key differences between TB-500 and BPC-157?

They’re different molecules studied for different mechanisms. TB-500 is the 43-residue sequence of thymosin beta-4, and its research centers on actin and cell movement. BPC-157 is a 15-residue sequence from a gastric protein, studied for blood vessel growth, nitric oxide signaling and the gut lining. TB-500 weighs about 4,963 g/mol and BPC-157 about 1,420 g/mol.

The literature differs too. Thymosin beta-4 has been studied by many independent groups, while most BPC-157 work comes from one group in Zagreb. Because the two act on tissue repair at different points, researchers often pair them, and neither is FDA approved. To study TB-500 on its own, shop TB 500 peptide online.