Peptide clinic rules in the United States
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.
Updated
This guide summarises the rules that apply to peptide clinics, clinicians and compounding pharmacies in the United States. It is drawn from the public registers this directory uses and from the notice that appears on every page. It was last checked on 2026-10-20. It is not legal or medical advice. Ask a qualified professional about your own situation.
Regulatory status
Regulatory status, checked 2026-10-20: FDA rules on the bulk substances a compounding pharmacy may use are in flux. Sources disagree on the final status. Rules in this area change, so this page can go out of date. Check the FDA bulk-substances page before you act.
State licences
A prescriber's licence comes from a state board. Physicians are licensed by state medical or osteopathic boards. Nurse practitioners are licensed by state boards of nursing. Naturopathic physicians are licensed by state naturopathic medical boards. Pharmacies are licensed by state boards of pharmacy. Each state runs a free online lookup. Check that the licence is active and in the state where the prescriber practises.
Telehealth adds a step. A telehealth provider must be licensed in the state where you are when you are seen, not only where its office is. A listing on this site names the states the provider's website says it serves by telehealth. An empty field means the website does not say.
The NPI registry
The CMS NPI registry is free and public. It gives a clinician's name, specialty and practice address as registered. An NPI is an identifier, not a licence. The licence record sits with the state board.
Federal facility registration
A compounding facility may register with the FDA as an outsourcing facility under section 503B of the FD&C Act. The FDA publishes a public table of registered outsourcing facilities. A 503B registration is a federal facility registration. It is not a licence to prescribe and not an endorsement of any product. A 503A pharmacy is a state-licensed pharmacy that compounds for individual prescriptions.
The FDA bulks lists
Sections 503A and 503B each have a list of bulk drug substances that may be used in compounding. The FDA is still developing both lists. Several peptides that clinics have commonly prescribed sit in nomination categories. In February 2026, an HHS announcement said about 14 peptides would move back toward the FDA Category 1 list of substances still under evaluation. Sources disagree on the final status. Compounded preparations are not FDA-approved drugs.
How this site tracks rules
Each listing records where its facts came from and when they were read. The licence check field says whether the claim came from a state board, the FDA 503B register, the CMS NPI registry, or the business's own website. Rows from a business's own website are flagged for owner review. This site gives no dosing and never lists research-chemical sellers.
For more detail, read the guides "How to check a peptide clinic's licence" and "FDA rules for compounded peptides, in plain words" on this site.