Correct answer
Yes, it can affect both, and fitness to drive should be assessed.
Yes, it can increase tiredness or disturb sleep and concentration. Some treatments can also cause drowsiness, especially when starting or changing doses, but they do not all have the same effect. Fitness to drive depends on symptoms, treatment and medical advice; avoiding night driving is insufficient if you remain drowsy. Do not change or stop medication on your own.
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All options
Yes, it can affect both, and fitness to drive should be assessed.
No, it cannot affect sleep or tiredness.
It can affect only drowsiness, never fatigue.
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