Cetirizine dosage in children. The following are recommended doses of Cetirizine for children, but talk to your pediatrician about correct dosage for your child.

  • 6 to 11 years old: The recommended initial dose of Cetirizine is 5 mg or 10 mg once daily depending on how severe their symptoms are.
  • 2 to 5 years old: The recommended initial dose of Cetirizine is 2.5 mg (½ teaspoon) syrup once daily. The dosage in this age group can be increased to a maximum dose of 5 mg per day given as 1 teaspoon syrup once a day or one ½ teaspoon syrup given every 12 hours, or one 5 mg chewable tablet once a day.
  • 6 months to 2 years old: Syrup is recommended for children under 2 years old. The recommended dose of Cetirizine syrup in children 6 months to 23 months of age is 2.5 mg (½ teaspoon) once daily. The dose in children 12 to 23 months of age can be increased to a maximum dose of 5 mg per day, given as ½ teaspoon (2.5 mg) every 12 hours.