BPC 157 is one of the most unique peptides naturally found in the gut and effective both orally and by injection., Oral supports gut health, while the injectable version helps with healing and Most peptides are broken down in the stomach and not absorbed when taken orally, which is why injectable forms are often used. BPC 157 is a unique exception. Because it originates from the gut, its Frontiers Pharmacokinetics, distribution, metabolism, and excretion of body protective compound 157, a potential drug for treating various wounds, in rats and dogs Is BPC 157 Banned? Oral vs. Injectable Forms Explained