Are peptides legal?
It depends on the country, the peptide, and what you do with it. Buying, importing, possessing and selling are treated differently, and a “research use only” label does not settle the question. Pick your country for the detail, with links to the law and the regulator.
- Are peptides legal in the UK?Regulator: Medicines and Healthcare products Regulatory Agency (MHRA)Most research peptides are not controlled drugs in the UK, but that does not make them legal to sell for human use. Under the Human Medicines Regulations 2012 it is an offence to sell or supply an unlicensed medicinal product[3], and the MHRA has raided several operations making unlicensed peptides in 2026[11][12]. Growth hormone and HCG are Class C controlled drugs[4]. This page is general information, not legal advice.Read the United Kingdom guide →
- Are peptides legal in the US?Regulator: U.S. Food and Drug Administration (FDA)Research peptides sold for human use are, in the FDA's view, unapproved new drugs. It has said in 2026 warning letters that research-use-only labels do not change that[1][2]. Several peptides, including BPC-157 and TB-500, came off the FDA's compounding "safety risks" list in April 2026. That was because the people who nominated them withdrew, not because FDA approved them[6]. Growth hormone has its own criminal rule[9]. This page is general information, not legal advice.Read the United States guide →
- Are peptides legal in Canada?Regulator: Health CanadaHealth Canada's April 2026 advisory says unauthorised drug products, including peptides such as BPC-157, TB-500, ipamorelin, CJC-1295 and retatrutide, are illegal in Canada[3]. It says "research use only" labelling does not make them legal[3]. Residents generally cannot bring prescription drugs into Canada, and non-compliant products can be refused entry or seized[5]. This page is general information, not legal advice.Read the Canada guide →
- Are peptides legal in Australia?Regulator: Therapeutic Goods Administration (TGA)The TGA says peptide products are regulated as therapeutic goods, and that "research use only" disclaimers do not make their supply lawful[1]. Under the June 2026 Poisons Standard, BPC-157, TB-500, ipamorelin, CJC-1295, AOD-9604 and the growth-hormone peptide classes are prescription-only and must not be possessed without authority[2]. Importing a prescription-only medicine needs a valid Australian prescription at the time of import[3]. This page is general information, not legal advice.Read the Australia guide →
- Are peptides legal in New Zealand?Regulator: MedsafeMedsafe classifies BPC-157, TB-500, CJC-1295, ipamorelin, tesamorelin, retatrutide and many other peptides as prescription medicines[2]. Section 43 of the Medicines Act 1981 makes it an offence to import, possess or use a prescription medicine without a reasonable excuse[1]. Medsafe says "research purposes only" wording has no legal effect[3]. This page is general information, not legal advice.Read the New Zealand guide →
What is the same everywhere
- A “research use only” label is not a licence. Regulators judge a product by how it is presented and sold as a whole. See what research peptides are.
- Research peptides are not licensed medicines, even when they share an active ingredient with one, such as semaglutide or tirzepatide.
- Selling is regulated more tightly than buying. Most enforcement is aimed at sellers that market products for human use.
- Sport has its own rules. Many of these peptides are banned in competitive sport regardless of national law.
PepFinder does not give legal advice. Each country page links to the legislation and regulator it relies on, and shows the date it was last reviewed. To compare suppliers serving your country, use the supplier directory.