Correct answer
The onset of periods of drowsiness
They can cause drowsiness and reduce attention or reaction ability. Effects depend on the medicine, dose and individual; not every treatment necessarily causes the same effect. Read the leaflet and consult a doctor or pharmacist about driving, especially when starting treatment or changing dose. Do not drive when drowsy or impaired, and do not stop or alter treatment on your own.
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The onset of periods of drowsiness
Increased visual acuity
Decreased sensitivity to dazzle
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