Cetirizine is an antihistamine used to treat both seasonal and perennial allergy symptoms such as watery eyes, runny nose (rhinitis), itching eyes, and sneezing. Cetirizine is called Reactine in Canada and is available as 10mg and 20mg tablet. Cetirizine 10mg tablet is available without a prescription, however Cetirizine 20mg tablet requires a prescription.
Adverse drug reactions may include somnolence or drowsiness, fatigue, malaise, dizziness, dry mouth, diarrhea.