Is GHK-Cu with zinc thymulin legal?
Written by Aaron CuhaReviewed Sep 2026
- US: Permitted in cosmetics
- UK: Permitted in cosmetics
- AU: Permitted in cosmetics
- CA: Permitted in cosmetics
The US comes first because most people ask about it. Each country has its own page. It names the agency, the law or rule, and what the legal category means in real life.
All four countries, side by side
| What we list | United States · FDA | United Kingdom · MHRA | Australia · TGA | Canada · Health Canada |
|---|---|---|---|---|
| Status | Not approved | Not approved | Not approved | Not approved |
| Legal category | Permitted in cosmetics | Permitted in cosmetics | Permitted in cosmetics | Permitted in cosmetics |
| Note | Sold as a cosmetic serum, or as a pharmacy-mixed product for the skin. Not an approved treatment for hair loss. Claiming it regrows hair would make it a drug claim. | Sold as a cosmetic. Not approved for sale as a hair loss treatment. | None recorded | None recorded |
| Agency | Check FDA directly | Check MHRA directly | Check TGA directly | Check Health Canada directly |
US FDA status: Sold as a cosmetic, or as a skin product mixed by a pharmacy. Neither part is an approved drug for hair loss. The approved drug you put on the scalp for pattern hair loss is minoxidil.. Reviewed Sep 2026.
Country by country
Is GHK-Cu with zinc thymulin legal in the United States?
GHK-Cu with zinc thymulin can be sold in the United States as a supplement or cosmetic ingredient. Its legal category is "Permitted in cosmetics". That is not approval as a drug. FDA has not checked any health claim made for it. Versions you inject, and "research use only" versions, fall outside supplement rules, so that label does not make them legal to use in people. On the evidence, 1 completed human trial is cited on its profile.
The full United States answerIs GHK-Cu with zinc thymulin legal in the United Kingdom?
GHK-Cu with zinc thymulin can be sold in the United Kingdom as a supplement or cosmetic ingredient. Its legal category is "Permitted in cosmetics". That is not approval as a drug. MHRA has not checked any health claim made for it. Versions you inject, and "research use only" versions, fall outside supplement rules, so that label does not make them legal to use in people. On the evidence, 1 completed human trial is cited on its profile.
The full United Kingdom answerIs GHK-Cu with zinc thymulin legal in Australia?
GHK-Cu with zinc thymulin can be sold in Australia as a supplement or cosmetic ingredient. Its legal category is "Permitted in cosmetics". That is not approval as a drug. TGA has not checked any health claim made for it. Versions you inject, and "research use only" versions, fall outside supplement rules, so that label does not make them legal to use in people. On the evidence, 1 completed human trial is cited on its profile.
The full Australia answerIs GHK-Cu with zinc thymulin legal in Canada?
GHK-Cu with zinc thymulin can be sold in Canada as a supplement or cosmetic ingredient. Its legal category is "Permitted in cosmetics". That is not approval as a drug. Health Canada has not checked any health claim made for it. Versions you inject, and "research use only" versions, fall outside supplement rules, so that label does not make them legal to use in people. On the evidence, 1 completed human trial is cited on its profile.
The full Canada answerGHK-Cu with zinc thymulin in sport and the military
Whether GHK-Cu with zinc thymulin is banned in sport is set by the World Anti-Doping Code and by military rules, not by its legal status. Before you compete or get tested, look up GHK-Cu with zinc thymulin by name on the Prohibited List, or look up a named product in Global DRO. Under the World Anti-Doping Code, category S0 bans, at all times, any drug-like substance that meets two tests. No other section of the List covers it. And no government health regulator anywhere has a current approval for it as a treatment in people. Many substances that are approved somewhere are banned by name in another section. So approval does not mean a substance is allowed in sport.
- WADA Prohibited List
- Global DRO (check a named product)
- USADA (US athletes)
- Operation Supplement Safety (US service members)
The rules you compete or serve under decide this, not this page.
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General information, current as of Sep 2026. Not legal advice. Legal status changes. For your own situation, check with the agency or a lawyer. Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use. Sellers named on the price pages are ranked by certificate tier, then price, and any affiliate income is disclosed there. Naming a seller is not a recommendation to buy or use anything.