Do I need to tell DVLA about prescribed medical cannabis?

The direct answer

DVLA guidance requires drivers to report certain medical conditions and conditions that affect safe driving. Some condition-specific pages also say to notify DVLA when prescribed medication or its side effects affect the ability to drive safely.

GOV.UK’s separate drug-use notification page concerns illegal drug use or misuse of prescription drugs. A lawfully issued prescription should not automatically be treated as misuse, but the underlying condition, side effects, safe-driving impact and licence category still need to be checked.

Use this four-step decision path

1. Check the diagnosed condition. Search the official DVLA health-condition checker rather than searching only for “medical cannabis”.
2. Check the licence group. Car and motorcycle licences use Group 1 standards. Bus, coach and lorry licences use Group 2 standards, which can be stricter and may require a paper form.
3. Check current driving effects. Consider symptoms, treatment changes and side effects such as sleepiness, confusion, impaired concentration or poor coordination.
4. Escalate uncertainty. Contact DVLA and the treating clinician when the condition page, licence standard or medication effect does not produce a clear answer.

Start with the condition—not the product name

Medical cannabis may be prescribed for many different conditions. Notification rules depend on the condition and its effect on safe driving. A condition may need to be reported even when the medicine itself causes no problem; in another case, a medication effect may create the concern.

1. Search the official DVLA health-condition checker for the diagnosed condition.
2. Read the exact rules for a car/motorcycle licence or a bus/lorry/coach licence.
3. Consider whether the condition, treatment change or side effects affect safe driving.
4. Ask the treating clinician when you are unsure.

When should I urgently check or contact DVLA?

• Your condition appears on the DVLA notification list.
• Your condition has worsened since the licence was issued.
• Your doctor tells you to stop driving or says the condition or medication may affect safe driving.
• You develop persistent sleepiness, confusion, poor concentration, coordination problems or another effect relevant to driving.
• Your health condition affects your ability to drive safely and is expected to last for a significant period.
• You hold a Group 2 bus, coach or lorry licence, where standards and reporting rules can be stricter.
• There is illegal drug use, dependence or misuse of prescribed medication rather than use according to the prescription.

DVLA notification and drug-driving law are separate

A decision about whether DVLA must be notified is not the same as whether someone may lawfully drive at a particular moment. Even where no notification is required, it remains illegal to drive while unfit through drugs.

The statutory medical defence to the specified-limit offence may apply when a medicine was lawfully prescribed and taken as directed, but it does not protect impaired driving.

Read the direct medical cannabis driving guide →

What information should I have ready?

• The exact diagnosed condition and when it began or changed.
• Your licence type: car/motorcycle or bus/lorry/coach.
• The medicine, prescribed directions and recent treatment changes.
• Any side effects or symptoms relevant to safe driving.
• Advice received from your prescriber, GP or specialist.
• The correct DVLA condition page or form—not a form selected only because the medicine contains cannabis.

What if I am waiting for a DVLA decision?

GOV.UK says a person can usually continue driving while DVLA considers a notification, but exceptions and conditions apply. Follow the instructions for the relevant form, the advice of healthcare professionals and any direction to stop driving.

DVLA may seek information from a doctor, request an assessment, issue a shorter licence, require adaptations or decide that the person must stop driving.