Do not take cetirizine without first talking to your doctor if you have had an allergic reaction to it or to the medication hydroxyzine (Atarax, Vistaril).
Before taking cetirizine, tell your doctor if you have kidney or liver disease. You may need a dosage adjustment or special monitoring during treatment.
Cetirizine is in the FDA pregnancy category B. This means that it is not expected to be harmful to an unborn baby. Do not take cetirizine without first talking to your doctor if you are pregnant or could become pregnant during treatment.
Cetirizine passes into breast milk and may affect a nursing baby. Do not take cetirizine without first talking to your doctor if you are breast-feeding a baby.
If you are over 65 years of age, you may be more likely to experience side effects from cetirizine. Your doctor may prescribe a lower dose of this medication.
Take cetirizine exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.
Take the tablets with a full glass of water.
Chew the chewable tablets thoroughly before swallowing.
To ensure you get the correct dose, measure the liquid form of cetirizine with a dose-measuring spoon, cup, or dropper, not with a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist where you can get one.
Cetirizine can be taken with or without food.
Store cetirizine at room temperature away from moisture and heat.
If you are taking cetirizine on a regular schedule, take the missed dose as soon as you
remember. However, if it is almost time for the next dose, skip the missed dose and take only the next
regularly scheduled dose.
If you are taking cetirizine as needed, take the missed dose if it is needed, then wait the recommended or prescribed amount of time before taking another dose.
Stop taking cetirizine and seek emergency medical attention if you experience a rare but serious allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives).
Other, less serious side effects may be more likely to occur. Continue to take cetirizine and talk to your doctor if you experience
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drowsiness;
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dizziness;
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headache; or
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dry mouth.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
Use caution when driving, operating machinery, or performing other hazardous activities. Cetirizine may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities.
Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while taking cetirizine.
While you are taking cetirizine, do not take other prescription or over-the-counter cough, cold, or allergy medications without first talking to your doctor or pharmacist.
Use caution when driving, operating machinery, or performing other hazardous activities. Cetirizine may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities.
Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while taking cetirizine.
Cetirizine may increase the effects of other drugs that cause drowsiness or dizziness, including antidepressants, alcohol, sedatives (used to treat insomnia), pain relievers, anxiety medicines, muscle relaxants, and other antihistamines. Tell your doctor about all medicines that you are taking, and do not take any medicine without first talking to your doctor.
While you are taking cetirizine, do not take other prescription or over-the-counter cough, cold, or allergy medications without first talking to your doctor or pharmacist.
Cetirizine may increase the effects of other drugs that cause drowsiness or dizziness, including antidepressants, alcohol, sedatives (used to treat insomnia), pain relievers, anxiety medicines, muscle relaxants, and other antihistamines. Tell your doctor about all medicines that you are taking, and do not take any medicine without first talking to your doctor.
While you are taking cetirizine, do not take other prescription or over-the-counter cough, cold, or allergy medications without first talking to your doctor or pharmacist.
Drugs other than those listed here may also interact with cetirizine. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines, including vitamins, minerals, and herbal products.
Seek emergency medical attention if an overdose is suspected.
Symptoms of a cetirizine overdose are not well known but may include drowsiness.