Cetirizine Use in Children: Safety, Renal Dosing Adjustments, and Pre‑Testing Guidelines

Renal Impairment Dosing

• In pediatric patients with moderate renal impairment, the recommended cetirizine dose should be reduced by 50 % to avoid drug accumulation. 2
• Cetirizine is contraindicated in children with severe renal impairment (creatinine clearance < 10 mL/min) because of the risk of toxicity. 2

Safety Profile

• At the approved pediatric dosing, cetirizine is associated with mild sedation in a minority of patients (approximately 14 % versus 6 % with placebo), indicating a modest increase in sedation risk compared with no treatment. 1
• Overall adverse‑event rates (e.g., headache, throat irritation, abdominal discomfort) are comparable to those observed with placebo, supporting a favorable tolerability profile. 1

Discontinuation Before Allergy Skin Testing

• To prevent antihistamine interference with skin‑test reactivity, cetirizine should be stopped 3–4 days prior to performing allergy skin testing in children. 1