J Thorac Cardiovasc Surg 123(1):175-83, 2002
BPC-157 Pen is a regenerative peptide format designed to activate tissue repair, improve microcirculation, and support the recovery of muscles, ligaments, and vascular structures
When administered intramuscularly (arm or buttock), you will have a rapid onset of action and it bypasses GI metabolism as well as provide increased bioavailability
It is not scheduled under the Controlled Substances Act, but products marketed as "MK-677" capsules or powders are unapproved drugs under FDA rules, and in practice it is sold almost exclusively online as an unregulated "research chemical" labeled not for human consumption
All claims, statistics, and clinical implications above are based on published peer-reviewed evidence as cited