Is Phenibut legal in United Kingdom?

Legal status

Phenibut is caught by the blanket Psychoactive Substances Act 2016: as a psychoactive substance with no UK medicines licence and outside the Act's exempted categories, its production, supply, offer to supply and importation are prohibited (mechanism: blanket-NPS, not individually named); it is not scheduled under the Misuse of Drugs Act 1971.

Consequences if caught

Producing, supplying, offering to supply or importing phenibut is an offence under the 2016 Act; simple possession for personal use is not an offence except in a custodial institution, which leaves a grey area around personal use.

If prescribed or medical

Phenibut is not licensed as a medicine in the UK and has no prescription or medicinal status.

Documentation

Because import and supply are banned, lawful purchase of phenibut is difficult; sellers sometimes exploit the Act's food/supplement gaps, but importing it falls within the supply/import prohibition, and personal-use possession outcomes are left to confirmation.

Drug laws and enforcement change and vary within a country. This is not legal advice. Always confirm with United Kingdom’s embassy or official drug authority before traveling; penalties can be severe, including imprisonment.