What's Legal? — Peptide Regulatory Status by Country (2026)

Not legal advice. Not a scare piece. The actual legal status of every major peptide — compound by compound, country by country.

The 2025–2026 FDA enforcement wave targeted vendors, not users. Here is the current regulatory status of 17 major peptide compounds across the US, UK, and Australia.

DATA AS OF: 2026 | COMPOUNDS: 17 | COUNTRIES: 3 (US, UK, Australia) | URL: tonygreenberg.com/whats-legal

Status Key

Approved (Rx) — FDA/regulatory approved with a prescription pathway  |  Grey Market — Not approved but not explicitly banned; enforcement targets vendors  |  Banned / Scheduled — Explicitly prohibited or scheduled controlled substance

Regulatory Status Table

CompoundUnited StatesUnited KingdomAustraliaRx PathUser Risk
BPC-157 Grey Market Grey Market Scheduled (S4) No LOW
TB-500 Grey Market Grey Market Grey Market No LOW
Semaglutide Approved (Rx) Approved (Rx) Approved (Rx) Yes (Rx) VERY HIGH
Tirzepatide Approved (Rx) Approved (Rx) Approved (Rx) Yes (Rx) VERY HIGH
Retatrutide Grey Market Grey Market Grey Market No MEDIUM
CJC-1295 Grey Market Grey Market Grey Market Limited LOW
Ipamorelin Grey Market Grey Market Grey Market Limited LOW
PT-141 Approved (HSDD) Grey Market Grey Market Yes (Rx) LOW
Selank Grey Market Grey Market Grey Market No LOW
Semax Grey Market Grey Market Grey Market No LOW
Epithalon Grey Market Grey Market Grey Market No LOW
GHK-Cu Grey Market Grey Market Grey Market No LOW
AOD-9604 Grey Market Grey Market TGA rejected No LOW-MEDIUM
MOTS-c Grey Market Grey Market Grey Market No LOW
SS-31 Grey Market Grey Market Grey Market No LOW
Thymosin Alpha-1 Grey Market Approved (some) Grey Market Limited LOW
Dihexa Grey Market Grey Market Grey Market No LOW

Filter Options (Interactive)

The live page at tonygreenberg.com/whats-legal allows filtering by compound name, status, and country. The search field accepts any compound name or status keyword.

e.g. BPC-157, Semaglutide, Grey Market, Approved...