Glossary term

Sedation: Sedation means a medicine causes drowsiness or reduced alertness.

EssentialSafetySource quality: HighLast updated: 29 June 2026

Why this term matters

One of the most practical patient-safety terms, especially for driving and work.

UK medical cannabis context

DfT guidance tells clinicians to discuss not driving if symptoms such as sleepiness develop and to take extra care at dose changes.

What not to assume

Sedation can change over time and may worsen with other CNS depressants, alcohol or dose changes.

Careful wording: Avoid minimising sedation because the medicine is 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.