Compounded Peptides Explained: APIs, COAs, 503A vs 503B & How Pharmacies Should Source Safely The FDA just announced that they're taking steps to lift restrictions on 12 peptides including BPC 157 and TB 500 making them accessible through compounding pharmacies again. This is a HUGE step 503A vs. 503B Compounding & FDA Regulations Guide Restore Health Consulting FDA has removed certain bulk drug substances that were placed on the category two list and has announced it will consult the Pharmacy Compounding Advisory Committee (PCAC) for potential future inclusion of BPC 157 Banned: Key Facts on the Latest FDA Decision Research Peptides vs. Pharmacy Compounded Peptides: What's the Real Difference? Renew Vitality