BPC 157 and the gutbrain axis: emerging links between cytoprotection and neuroregeneration BPC 157 has already hit the mainstream, but should it hit your bloodstream? Human Metabolism and Urinary Elimination Kinetics of the Fragrance Geraniol after Oral Dosage Chemical Research in Toxicology Frontiers Pharmacokinetics, distribution, metabolism, and excretion of body protective compound 157, a potential drug for treating various wounds, in rats and dogs Frontiers Pharmacokinetics, distribution, metabolism, and excretion of body protective compound 157, a potential drug for treating various wounds, in rats and dogs BPC 157 clears your system in under 2 hours. That's why it needs daily dosing. TB 500's plasma half life is only about 2 hours, but it enters your cells and binds to actin monomers