Drug driving: Drug driving refers to offences connected with driving while impaired by drugs or with specified controlled drugs above legal limits in the body.

This is one of the most important real-world safety topics in UK patient education.

GOV.UK says patients may raise a statutory medical defence if the drug is lawfully prescribed and taken as directed, but driving while actually impaired remains an offence.

A prescription does not create immunity if the patient is actually impaired.

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