From the FDA Drug Label
Directions Adults and children 6years and overone 10 mg tablet once daily, do not take more than one 10 mg tablet in 24 hours. The FDA drug label does not answer the question.
From the Research
The recommended weight-based dose of Zyrtec (cetirizine) for children is 0.25 mg per kg of body weight once daily, with a maximum of 10 mg per day. For practical administration, this typically translates to 2.5 mg (half of a 5 mg tablet or 2.5 ml of syrup) for children weighing 10-20 kg, and 5 mg (one 5 mg tablet or 5 ml of syrup) for children weighing over 20 kg. For infants 6-12 months, the dose is usually 2.5 mg once daily. Children 2-5 years typically receive 2.5 mg once or twice daily (maximum 5 mg daily), while those 6 years and older can take 5-10 mg once daily depending on weight and symptom severity. Zyrtec is an antihistamine that works by blocking histamine receptors, reducing allergy symptoms like sneezing, itching, and runny nose. It's essential to use the children's formulation when available and to measure liquid doses with the provided measuring device for accuracy. Always consult with a healthcare provider before starting any medication in children, especially those under 2 years of age.
Key Considerations
- The dose of Zyrtec for children should be based on their weight, with a maximum daily dose of 10 mg.
- For children under 6 years, the dose is typically 2.5 mg once or twice daily, while those 6 years and older can take 5-10 mg once daily.
- It's crucial to use the children's formulation and measure liquid doses accurately to avoid overdosing or underdosing.
- Consultation with a healthcare provider is necessary before starting Zyrtec in children, especially those under 2 years of age, as they may require closer monitoring and dose adjustments 1, 2.
Administration and Monitoring
- Zyrtec can be administered orally, and the dose should be adjusted based on the child's weight and response to treatment.
- Parents or caregivers should be educated on the proper administration of Zyrtec, including the use of the measuring device for liquid formulations.
- Regular monitoring of the child's symptoms and potential side effects is necessary to adjust the dose or discontinue treatment if needed 3, 4.