FDA Puts BPC 157, TB 500, and 5 Other Peptides Under the Microscope: What Prescribers Need to Know About the 503A Review Lengea When will the FDA reclassify BPC 157 to Category 1? Odds & Predictions This is one of the biggest peptide regulatory shifts in years. And it's just getting started. The FDA has taken its first step toward reversing its 2023 stance, removing 12 peptides from BPC 157: Experimental Peptide Creates Risk for Athletes