Is Carnosine legal in the United Kingdom?

A two-part molecule the body makes itself, sold as an anti-ageing supplement. It is not approved anywhere for anything. Its largest study gave 299 people 2 g a day or a dummy pill. On every fitness test, people on the dummy pill did just as well overall. A couple of wins turned up only in small age and sex groups. An enzyme in the blood breaks down most of a carnosine pill before it reaches muscle. That is why the real evidence sits with beta-alanine instead.

Carnosine is a small molecule made of two building blocks, beta-alanine and histidine. Your body makes it and stores it in muscle and brain.

How it works: Inside cells, carnosine soaks up acid. That is why muscle, where hard effort makes acid, is packed with it.

Approval history: Not an approved drug anywhere. In the United States carnosine is sold as a dietary supplement. That means the FDA has not checked whether it works, and it cannot legally be sold as treating or preventing disease. Carnosine bound to zinc, called polaprezinc, is an approved prescription drug for stomach ulcers in Japan. That is a different molecule, in a different country, for a different use, and it gives carnosine itself no legal standing.

Licenses medicines for sale in the UK. A compound without a licence to be sold (a marketing authorisation) is an unlicensed medicine. The law only lets it reach people through a prescriber, under the specials scheme (unlicensed medicines made for one patient's needs). It cannot be sold as a research product.

The legal category above is how The Longevity Archive reads Medicines and Healthcare products Regulatory Agency listings for Carnosine on the reviewed date. It is not a legal opinion. Rules change. Bringing a compound into the country, prescribing it and owning it can each be treated differently. Check with the agency before you act on anything here.

Check MHRA directly

Whether Carnosine is banned in sport is set by the World Anti-Doping Code and by military rules, not by its legal status in the United Kingdom. Before you compete or get tested, look up Carnosine 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.