Are peptides legal? What the law says in 8 countries

In which countries are peptides legal?

None of the sources quoted for these 8 countries makes research peptides lawful as a class, and the rules for bringing them in differ sharply from one country to the next.

“Unclear” means the sources read for that country do not address the question. It does not mean yes, and it does not mean no. Every source was read on 15 September 2026, and laws change; the full list with dates is at the foot of this page.

Are peptides legal in the US?

Federal law does not make research peptides legal or illegal as a class: a peptide intended to treat disease or to affect how the body works is a drug, and FDA says that in most circumstances it is illegal for individuals to import drugs into the U.S. for personal use.

The definition sits in 21 U.S.C. 321(g)(1). It covers “articles intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease in man or other animals” and “articles (other than food) intended to affect the structure or any function of the body of man or other animals”. The approval requirement sits in 21 U.S.C. 355(a): “No person shall introduce or deliver for introduction into interstate commerce any new drug, unless an approval of an application filed pursuant to subsection (b) or (j) is effective with respect to such drug.”

Some peptides have been through that approval. FDA's prescribing information for Vyleesi, which is bremelanotide, records an initial U.S. approval in 2019, and FDA's approval letter for Egrifta, which is tesamorelin, approves it for one specific indication. A research-grade vial of either molecule is not the approved product.

On bringing drugs in, FDA's personal importation page says: “In most circumstances, it is illegal for individuals to import drugs or devices into the U.S. for personal use because these products purchased from other countries often have not been approved by the FDA for use and sale in the U.S.” It lists the situations in which its staff may take a more permissive decision, and among the reasons it gives for refusing a personal importation is a shipment that “appears to be intended for commercial distribution”.

Pharmacy compounding is regulated separately. FDA's list of bulk drug substances that may present significant safety risks in compounding, current as of 22 April 2026, includes Kisspeptin-10 and ipamorelin acetate among the substances under category 2 of its interim policies, and lists BPC-157, CJC-1295, epitalon, GHK-Cu for injectable routes, semax, selank and the thymosin beta-4 fragment known as TB-500 among substances that were previously in category 2 before their nominations were withdrawn. That list is about compounding, not research supply.

Are peptides illegal?

Not as a class, because some peptides are approved medicines, but several are restricted by name, so the answer depends on the compound, what it is for and where you are.

Australia is the clearest case among the countries in the table. Its Poisons Standard, which took effect on 1 June 2026, lists BPC-157, CJC-1295, ipamorelin and TB-500 in Appendix D clause 5, under the heading “Poisons for which possession without authority is illegal”, and describes that table as poisons “that must not be possessed by a person without authority (for example, possession other than in accordance with a legal prescription)”. It also lists glutathione for parenteral use in Schedule 4. The standard notes that “The scheduling of poisons is implemented through relevant State and Territory legislation”.

Elsewhere, the sources quoted on this page regulate medicines by purpose or presentation rather than by listing research peptides, which is why several rows in the table say unclear rather than yes or no.

Are peptides banned in sport?

Many are: the World Anti-Doping Agency’s 2026 Prohibited List names several peptides and peptide classes, whatever their legal status for purchase.

In the 2026 Prohibited List, section S0 prohibits any pharmacological substance not covered by a later section of the List that has no current approval by any governmental regulatory health authority for human therapeutic use, and names BPC-157 as an example. Section S2.2.4 lists growth hormone releasing hormone analogues including CJC-1295, sermorelin and tesamorelin, and growth hormone secretagogues including ipamorelin. Section S2.3 lists “Thymosin-β4 and its derivatives e.g. TB-500”. If you compete under an anti-doping code, eligibility is a separate question from legality.

Are peptides legal in Vietnam?

Vietnamese law does not name research peptides: the Law on Pharmacy defines a drug by its purpose and lets unregistered drugs be imported for scientific research under an import permit, and the full sourced answer is on the Vietnam page.

Article 2 of the Law on Pharmacy No. 105/2016/QH13 defines a drug as “a preparation containing a pharmaceutical ingredient or medicinal materials for the purpose of prevention, diagnosis, cure, treatment or mitigation of human diseases or modification of physiological functions of the human body”. Article 60 clause 2 lets the drugs it lists be imported “in a quantity not exceeding that stated in their import permits”, and since 1 July 2025 point h of that list has read, in the wording given by Law No. 44/2024/QH15: “Bioequivalence tests, bioavailability assessment, making of samples for registration or testing or scientific research or display at exhibitions or fairs”.

The definition and the opening words of clause 2 are quoted from the 2016 text, which the amending law of 21 November 2024 did not change. That law moved clinical trials out of point h into a new clause 5a, which lets drugs for clinical trial be imported without import permits, on trial outlines approved by the Ministry of Health, apart from drugs under special control, which clause 4 of that article allows only under import permits. Separately, Article 60 of Decree No. 163/2025/ND-CP lets a person entering Vietnam bring medicine for the treatment of their own illness without an import licence, within limits on quantity and customs value, and it does not mention research material. The instruments, the customs rules and the parts that are genuinely unclear are set out on are peptides legal in Vietnam.

Where can you legally buy peptides?

That is decided by the law where you live, and no seller, this one included, can tell you that a purchase is lawful for you.

An approved peptide medicine is prescribed by a doctor and dispensed by a pharmacy. Research-use material is a separate lane, and the table above shows how differently 8 countries treat bringing it in. Where a row says unclear, a qualified lawyer in that country is the right source. What a buyer can check about any supplier is set out in where to buy peptides.

Does a certificate of analysis make a peptide legal?

No: a certificate of analysis records what is in a vial, and it does not change how any law classifies the compound.

It is still worth reading, for a different reason: it is the only document that says what a batch actually contains. The released certificates are on the certificates page, and how to read a certificate of analysis explains each line.

Sources

Every source below was opened and read on 15 September 2026, and the lines quoted on this page were taken from it. Where only part of a text could be read, the entry says so.

1. 21 U.S.C. 321(g)(1), definition of "drug"United States Code, Legal Information Institute, Cornell Law School. Clauses (B) and (C) of the definition are quoted on this page.
2. 21 U.S.C. 355(a), necessity of effective approvalUnited States Code, Legal Information Institute, Cornell Law School. The first sentence of subsection (a) is quoted on this page.
3. Personal ImportationU.S. Food and Drug Administration. Content current as of 18 August 2025. The answer for U.S. citizens and the refusal criteria are quoted.
4. Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety RisksU.S. Food and Drug Administration. Content current as of 22 April 2026. Both tables were read: substances under category 2 of the interim policies, and substances previously in category 2 whose nominations were withdrawn.
5. VYLEESI (bremelanotide injection) prescribing informationU.S. Food and Drug Administration, Drugs@FDA. The label records "Initial U.S. Approval: 2019".
6. NDA 022505 approval letter, Egrifta (tesamorelin for injection)U.S. Food and Drug Administration, Drugs@FDA. The letter states that the application is approved for one indication.
7. Guidance Note 8: A guide to what is a medicinal productMedicines and Healthcare products Regulatory Agency (MHRA). Quotes the definition of a medicinal product in regulation 2 of the Human Medicines Regulations 2012 and the case by case classification rule.
8. Freedom of Information response on seizures of medicines (FOI 22/431)MHRA, published on GOV.UK. Week commencing 7 March 2022. It sets out regulation 17 of the Human Medicines Regulations 2012 and the personal import exemption at 17(6).
9. Poisons Standard June 2026 (F2026L00633)Federal Register of Legislation, Australian Government. Commenced 1 June 2026. The Schedule 4 entries, Appendix D clause 5, the laboratory labelling exemption and the statement that scheduling is implemented through State and Territory legislation are quoted.
10. Therapeutic Goods Regulations 1990, Schedule 5 item 1Federal Register of Legislation, Australian Government. Compilation No. 130, compilation date 8 September 2026.
11. Food and Drugs Act (R.S.C., 1985, c. F-27), section 2, definition of "drug"Justice Laws Website, Government of Canada. The definition is quoted on this page.
12. Bringing health products into Canada for personal use (GUI-0116)Health Canada. Date modified 13 July 2026. One sentence on prescription drugs is quoted.
13. Travelling with medications to SingaporeHealth Sciences Authority (HSA). Last updated 15 June 2026.
14. Import and supply of unregistered therapeutic products for patient's useHealth Sciences Authority (HSA). Last updated 25 May 2026.
15. DOH-FDA-BOC Joint Circular No. 1: Importation of FDA-DOH Regulated Products for Personal UseDepartment of Health, Food and Drug Administration and Bureau of Customs, Philippines. Dated 22 June 2015. The copy filed on the WTO import licensing register is quoted.
16. Passenger belongings related to health productsFood and Drug Administration, Thailand. The medicines entry is quoted.
17. Importation of health productsFood and Drug Administration, Thailand. The list of health products that page covers is quoted.
18. Law on Pharmacy No. 105/2016/QH13National Assembly of Vietnam, English text in the FAOLEX database of the UN Food and Agriculture Organization. Article 2 and the opening words of Article 60 clause 2 are quoted from the 2016 text, and Law No. 44/2024/QH15 did not amend either passage.
19. Law No. 44/2024/QH15 amending the Law on PharmacyLuatVietnam. Dated 21 November 2024. The wording it gave Article 60 clause 2 point h, in force from 1 July 2025, is quoted from its English translation, and its new Article 60 clause 5a on clinical trial imports is described.
20. Decree No. 163/2025/ND-CP detailing the Law on PharmacyGovernment of Vietnam, English translation on LuatVietnam. Dated 29 June 2025, in force 1 July 2025. Article 60, on importing medicine for non-commercial purposes, is described in the Vietnam row.
21. Decree No. 163/2025/ND-CP, Vietnamese textOfficial Gazette (Công báo), Government of Vietnam. Issues 875 to 882 of 14 July 2025. Article 60 is on pages 74 to 76 of issue 875 and 876.
22. The Prohibited List (2026)World Anti-Doping Agency. Sections S0, S2.2.4 and S2.3 are quoted.