BPC 157 And TB 500: Background, Indications, Efficacy, And Safety GlobalRPH Christopher Mendias, PhD, gets four or five patient questions daily about peptides at his sports medicine practice in Phoenix, Arizona. BPC 157 is the most popular. That's because thousands of people are buying These two peptides are often discussed together but they are studied for different biological roles. BPC 157 is commonly mentioned in research related to localized tissue repair and gut lining signaling pathways. TB 500 BPC 157 + TB 500 Blend 20mg Research Peptide PRG BPC 157 Benefits, Dosage & Before After Results