With cetirizine, dosing guidelines take several factors into account, such as your age and the severity of your symptoms. The recommended dose for most adults and children age six and over is cetirizine 10 mg once daily. For children ages two through five, a lower cetirizine dosage is recommended, and only the syrup form of the drug is approved for this age group.
The recommended dose of cetirizine hydrochloride (Zyrtec®) will vary, depending on a number of factors, including:
- Your age
- The severity of your symptoms
- Other medical conditions you may have.
As is always the case, do not adjust your dose unless your healthcare provider specifically instructs you to do so.
The recommended dose of cetirizine for most adults and children age six and over is cetirizine 10 mg once daily. For mild symptoms, cetirizine 5 mg once daily may be sufficient. Check with your healthcare provider if you have liver or kidney disease, as a lower dose may be recommended.
The label of cetirizine recommends that people age 65 and older check with their healthcare providers before taking the drug in order to determine the best dose. It is common for liver and kidney function to decline with age, and a lower cetirizine dosage may be recommended.
The recommended dose of cetirizine for children ages two through five is cetirizine 2.5 mg once daily. This dose is equivalent to half a teaspoonful (2.5 mL) of cetirizine syrup. Consult your child's healthcare provider if your child has liver or kidney problems, as a lower dosage may be recommended. Only the syrup form, designed to treat allergies, is approved and labeled for this age group. Other cetirizine products are not approved for this young age range.