bpc-157 research articles and the Difference Between an Evidence Gap and a Cover-Up: What the entire human evidence base actually looks like, and the questions to ask next. — WellFounded BPC-157: A Comprehensive Research Overview
Description
It's a metabolic support compound that happens to include B12 as one component

it is sold almost exclusively as an unregulated research chemical labeled not for human consumption

Blood Sugar Regulation Helps regulate blood sugar and manage insulin levels, aiding inflammation and weight loss

Safety and Side Effects Both peptides have favorable safety profiles in animal studies and in the human case-series data clinicians have accumulated
