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Clinical Library
Navigate 503A and 503B pharmacies, FDA compounding policy, quality checks, and responsible sourcing.

Compounding & Sourcing
FDA's interim policy sorts nominated bulk substances into three categories, and only Category 1 gives a 503A pharmacy a workable basis to compound. Here is what each category means, which peptides sit where as of FDA's May 2026 list, and how to check the status yourself.

Compounding & Sourcing
Every peptide compounding pharmacy says it is the careful one. Here is how to find out: the license, the inspection file, the accreditation, the certificate of analysis, and whether the peptide itself is legal to compound this month.

Legal & Compliance
The July 2026 PCAC votes moved six peptide families one step forward, but they did not approve drugs, amend the 503A Bulks List, or change what clinicians may source today.