BPC 157 TB 500 Simon's Compounding The Hidden Risks of BPC157: What Patients Need to Know About Contamination and Safety Regenexx at New Regeneration Orthopedics BCP 157 and TB 500 often get lumped together because they're both healing peptides, but they work a bit differently and shine in different situations. When paired together, it is referred to as 'the Peptide BPC 157 Does It Work? Breaking Down the Evidence and the Hype