Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.
Before taking this medicine
You should not use  levocetirizine if you are allergic to levocetirizine or cetirizine (Zyrtec).
You should not take levocetirizine if you have end-stage kidney disease or if you are on dialysis. Any child younger than 12 years old with kidney disease should not take levocetirizine.
Tell your doctor if you have ever had:
kidney disease;
liver disease;
urination problems (caused by conditions such as enlarged prostate or spinal cord lesion); or
gallbladder problems.
Levocetirizine is not expected to harm an unborn baby. Tell your doctor if you are pregnant.
You should not breast-feed while using this medicine.
Levocetirizine is not approved for use by anyone younger than 6 months old.
How should I take levocetirizine?
Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.
A child's dose of levocetirizine is based on the age of the child. Follow your doctor's dosing instructions very carefully.
Do not give a child more than the prescribed dose of this medicine. A child's body absorbs twice as much of the same dose size of levocetirizine as an adult's body.
Taking more of this medication will not make it more effective, and may cause severe drowsiness.
Levocetirizine is usually taken in the evening, with or without food.
Measure liquid medicine carefully. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).
Call your doctor if your symptoms do not improve, if they get worse, or if you also have a fever.
Store at room temperature away from moisture and heat.
What happens if I miss a dose?
Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
