# Peptide rules and licences

PeptideClinic has 6 guides on licensed peptide therapy clinics, clinicians and compounding pharmacies in the United States, grouped by country.

## General

- [How to check a peptide clinic's licence](https://peptideclinic.fyi/guides/check-a-peptide-clinic-licence.md): The four public registers that verify a peptide clinic, clinician or compounding pharmacy — state boards, the NPI registry, the FDA 503B list and pharmacy lookups — and what each one can and cannot tell you.
- [Common mistakes when choosing a peptide clinic](https://peptideclinic.fyi/guides/common-mistakes-peptide-clinic.md): Five mistakes to avoid: skipping the licence check, not asking about the pharmacy, comparing only the monthly price, trusting marketing claims, and relying on an old rule.
- [FDA rules for compounded peptides, in plain words](https://peptideclinic.fyi/guides/fda-peptide-compounding-rules.md): How sections 503A and 503B decide which peptides a pharmacy may compound, what the February 2026 Category 1 news changed, and where to check the current status.
- [How to compare peptide providers](https://peptideclinic.fyi/guides/how-to-compare-peptide-providers.md): Ask every provider for the same three things: the licence its prescribers hold, the pharmacy that dispenses, and the total price in writing. Then compare the answers side by side.
- [How to read a peptide clinic listing](https://peptideclinic.fyi/guides/how-to-read-a-peptide-clinic-listing.md): Every listing on this site shows services, prescriber type, licence check method and pricing. This guide explains each attribute and what it tells you.
- [Peptide clinic rules in the United States](https://peptideclinic.fyi/guides/us-peptide-clinic-rules.md): A summary of the rules that apply to peptide clinics, clinicians and compounding pharmacies in the United States, drawn from the public registers this directory uses.

> **Not medical advice.** Regulatory status, checked 2026-10-20: FDA rules on the bulk substances a compounding pharmacy may use are in flux. A February 2026 HHS announcement moved about 14 peptides back toward the FDA Category 1 list, and sources disagree on the final status — check the FDA bulk-substances page (https://www.fda.gov/drugs/human-drug-compounding/bulk-drug-substances-used-compounding) before you act. PeptideClinic is a directory, not a clinic or a pharmacy: a listing is a record, never an endorsement. It gives no dosing, no medical advice and no outcome claims, and it never lists research-chemical sellers. Confirm a provider's licence on the named state board, the FDA 503B register or the NPI registry before you book. In an emergency call 911.