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Molecule Description

Cetirizine is used to treat allergic conditions and the active ingredient of this medicine is Cetirizine Hydrochloride.

Uses of Cetirizine

This medicine is used for the relief of symptoms of hay fever and allergies such as dust or pet allergies, sneezing, itchy, runny and blocked nose, red and watery eyes. It is also used to treat swelling, redness and itchiness of the skin.
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Contraindications of Cetirizine

When should one not use Cetirizine

Allergic to Cetirizine or having severe kidney disease.

Side effects of Cetirizine

Common side effects of this drug are:

  • Dizziness
  • Drowsiness
  • Allergic reactions like rash, swelling loss of consciousness and loss of weight
  • Tremors or fits
  • Tiredness
  • Dry mouth, diarrhea
  • Sore throat
  • Abdominal pain

Precautions and Warnings of Cetirizine


Can I take Cetirizine during pregnancy?
If you are pregnant or you think you might be pregnant or are planning pregnancy, ask your doctor or pharmacist for advice before taking this medicine.

Breast Feeding

Can I take Cetirizine while breastfeeding?
It is not advisable during breastfeeding. The patient should consult with the doctor first.


Can I drive if I have consumed Cetirizine?
It does not affect your driving ability, but you may feel drowsy. Hence better to avoid if you feel drowsiness.


Can I consume alcohol with Cetirizine?
This medicine may cause calmness and excessive drowsiness with alcohol.

Other General Warnings

Talk to your doctor if
  • You have fits or kidney problem
  • You are suffering from spinal cord lesion

Mode of Action of Cetirizine

How Does It Work?

This medicine is an Antihistamine and it works by blocking a particular natural substance (Histamine) that your body makes during an allergic reaction.

Interactions of Cetirizine

Interactions with other medicines

  • Paracetamol
  • Atropine
  • Phenobarbital
  • Most sedatives
  • Other antibiotics of Cephalosporins class
  • Codeine
  • Diphenhydramine
  • Phenylephrine
  • Guaifenesin
  • Carbidopa/ Levodopa
  • Chlorcyclizine, etc.E11

Interactions with food items

No information is available on interactions of Cetirizine when taken with food, so consult your doctor or pharmacist for further details.

Dietary Restrictions of Cetirizine

No information is available on dietary restrictions while you are taking Cetirizine, consult your doctor or pharmacist for details.

Dosage of Cetirizine


The most common signs and symptoms of overdose may include feeling unwell, confused, restless, shaky, dizzy, tired or very sleepy. You may also notice a rapid heartbeat, dilated pupils or blurred vision and experience headache. Consult your doctor as soon as possible.
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Missed a Dose

If you forget to take your medicine, take it as soon as you remember and then wait 24 hours before taking your next dose. Do not take a double dose to catch up with the skipped dose.

Content Details


Dr. Ritu Budania

MBBS, MD (Pharmacology)

Frequently Asked Questions (FAQs)


Q: What should I discuss with my physician before taking Cetirizine?

A: You should not use this medication if you are allergic to it. Ask your doctor if it is safe for you to take this medicine if you have any specific medical condition. Also, mention all the prescription and non-prescription medicines, herbal preparations, and nutritional supplements that you may be taking to your doctor before starting this medication.
Last Updated on: 05 Oct 2020 | 10:47 PM (IST)

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The information provided herein is accurate, updated and complete as per the best practices of the Company. Please note that this information should not be treated as a replacement for physical medical consultation or advice. We do not guarantee the accuracy and the completeness of the information so provided. The absence of any information and/or warning to any drug shall not be considered and assumed as an implied assurance of the Company. We do not take any responsibility for the consequences arising out of the aforementioned information and strongly recommend you for a physical consultation in case of any queries or doubts. Please click here for detailed T&C.
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