As a double board certified cardiothoracic surgeon, I break down the science and risks behind the popular peptide BPC 157. Don't fall for the hype without evidence! For more information, guidance, What Is BPC 157? A Medical Clinic's Guide to the Body Protective Peptide, Its Uses, and What It Actually Does Perfect B BPC 157 500 mcg Oral Capsules In patients with cardiovascular disease, hypokalemia and even low normal plasma potassium levels increase the risk of ventricular arrhythmias. Whether actively increasing plasma potassium to the high normal range reduces risk is unclear.