Can a person drive a vehicle immediately after taking medications which have effect on his fitness to drive?

1. No, unless 4 hours pass from the time he takes the medication
2. Yes, if these medications do not affect his level of driving
3. Correct answer: No.
4. Yes, when the medication has a lasting harmful effect

WhyNo, you may not drive after taking medicine that affects driving. There is no 'after 4 hours it's fine' rule.