Boston Children's Health Physicians Cetirizine Dosing Chart

Age Group	Cetirizine Dose
Under 2 years	Ask a provider
2 to <6 years	2.5 mg (2.5 mL) once daily; if needed, may increase to 5 mg (5 mL) once daily or 2.5 mg (2.5 mL) every 12 hours. Do not exceed 5 mg in 24 hours.
6 years and older	5 mg (5 mL) or 10 mg (10 mL) once daily depending on symptom severity. Do not exceed 10 mg in 24 hours.