The science behind social media's peptide obsession Scientific American BPC 157 (5mg) + TB 500 (5mg) Dual Chamber Pen 10mg 1ml Pen Peptide Polska RMTG Subsidiary CELLGENIC Introduces Peptide Pen Product Line at Cancn Global Summit These two peptides are often discussed together but they are studied for different biological roles. BPC 157 is commonly mentioned in research related to localized tissue repair and gut lining signaling pathways. TB 500