Doctor explains cetirizine dosage, drowsiness, and withdrawal side effects

Dr Amit Saraf states that cetirizine is generally taken once daily, and repeatedly exceeding the dose increases risks of drowsiness and dizziness.

Drowsiness and fatigue remain the most common side effects, which can impair concentration and alertness during driving or machinery operation.

Long-term daily use has been linked to a rare withdrawal reaction involving intense itching within days of stopping the medication.