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 BPC 157 No Proof Required! Office for Science and Society McGill University Simultaneous quantification of TB 500 and its metabolites in in vitro experiments and rats by UHPLC Q Exactive orbitrap MS MS and their screening by wound healing activities in vitro ScienceDirect BPC 157: When Theoretical Biochemistry Meets Clinical Reality Elizabeth Yurth, MD, ABAARM, FAARM, FAARFM Pharmacokinetic differences between subcutaneous injection and intradermal microneedle delivery of protein therapeutics ScienceDirect