Glossary term

Controlled drug: A controlled drug is a medicine or substance regulated under drug-control law because of misuse and safety concerns. Some cannabis-based medicines fall into this area.

EssentialLegal / pharmacySource quality: HighLast updated: 29 June 2026

Why this term matters

Patients need this to understand travel rules, storage, packaging and driving discussions.

UK medical cannabis context

GOV.UK travel guidance and NICE discussions both assume patients may need proof and careful handling of controlled medicines.

What not to assume

“Controlled” does not mean “illegal”; it means stricter legal handling rules apply.

Careful wording: Avoid saying controlled drug means criminality when the medicine is lawfully prescribed.

Related glossary terms

Related MCPH pages

Sources and review notes

This entry is educational vocabulary, not medical advice. Suitability, prescribing, product choice and monitoring belong with a qualified clinician or pharmacist.