Peptide Compounding Regulation

2 articles in this topic.

Complete Guides

The 503A Bulk Drug Substances List Explained

The FDA 503A bulk drug substances list determines which peptides pharmacies can compound. How the category system works and which peptides are restricted.

18 min read|Mar 20, 2026

All Articles

Peptide Compounding Regulation

FDA Category 1 vs Category 2 Peptides

The FDA's Category 1 and Category 2 system determines which peptides compounding pharmacies can legally produce. What each category means and which peptides are affected.

15 min read|Mar 21, 2026