Drugs may interfere with a person’s ability to drive safely:

Unless they are prescribed by a doctor.
Only when combined with alcohol.
Even if they are prescribed by a doctor.
Only when driving at night.
Explanation

Many drugs, even if they are prescribed by a doctor, have side effects that can affect a person's driving ability. Some over-the-counter drugs can cause drowsiness, dizziness, blurred vision, and impaired coordination, which can negatively impact a person's ability to safely operate a vehicle. It's important for drivers to understand the potential side effects of any drugs they are taking, and to avoid driving if they are feeling drowsy or dizzy. It's also a good idea to consult with a doctor or pharmacist for advice on how a particular drug may affect driving.

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