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Allerkid (cetirizine dihydrochloride, antihistamine)

Written by Stephanie Nera, RPh, PharmD · Pharmacology

Updated Jul 26, 2021

Allerkid is the brand name of the generic drug cetirizine dihydrochloride.

Cetirizine is a type of drug known as an antihistamine. Cetirizine works by binding to histamine H1-receptors on various cells of the body especially in the central nervous system, lungs, and white blood cells. By blocking histamine, it prevents symptoms such as sneezing, itchiness, redness, inflammation, and runny nose.

It is a second-generation antihistamine which causes less drowsiness when taken as compared to first-generation antihistamines (e.g. diphenhydramine).


What is Allerkid used for?

This drug relieves symptoms of allergies due to:

  • Rhinitis
  • Chronic urticaria
  • How should I take Allerkid?

    Read the directions on the packaging for complete information. Check the label and expiration date.

    For oral liquids, use a medical-grade measuring cup or dropper, not a household spoon.

    How do I store Allerkid?

    Store this product at room temperature away from direct light and moisture. To prevent drug damage, you should not store it in the bathroom or the freezer. 

    There may be different brands of this drug that may have different storage needs. So, it is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

    You should not flush this product down the toilet or pour them into a drain unless instructed to do so. Additionally, it is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.

    Precautions & Warnings

    What should I know before using Allerkid?

    Before using this drug, tell your doctor if you are/have:

    • Pregnant or breastfeeding.
    • Taking any other medicines. This includes any prescription, OTC, and herbal remedies.
    • An allergy to any of the ingredients of this product.
    • Any other illnesses, disorders, or medical conditions.

    Is it safe during pregnancy or breastfeeding?

    Unfortunately, there isn’t enough information about the safety of using this drug during pregnancy and breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking any medication.

    Side Effects

    What side effects can occur from Allerkid?

    Like all drugs, this product may have side effects. If they occur, side effects are generally mild and resolve once treatment is finished or the dose is lowered. Some reported side effects include:

    • Headache
    • Pharyngitis
    • Abdominal pain
    • Cough
    • Drowsiness or sedation
    • Nausea
    • Vomiting
    • Diarrhea
    • Nose bleed
    • Bronchospasm

    However, not everyone experiences these side effects. In addition, some people may experience other side effects. So, if you have any concerns about a side effect, please consult your doctor or pharmacist.


    What drugs may interact with Allerkid?

    This medication may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. 

    To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and share it with your doctor and pharmacist. 

    Drugs with known interactions:

    • Alcohol-containing preparations
    • Other antihistamines
    • Other CNS depressants

    If you experience an adverse drug interaction, inform your doctor immediately to reevaluate your treatment plan. Approaches include dose adjustment, drug substitution, or ending therapy.

    Does food or alcohol interact with Allerkid?

    This drug may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Do not consume alcohol while taking this drug. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.

    What health conditions may interact with Allerkid?

    This drug may interact with underlying conditions. This interaction may worsen your health condition or alter the way the drug works. Therefore, it is important to always let your doctor and pharmacist know all the health conditions you currently have.


    The information provided is not a substitute for any medical advice. Therefore, you should always consult with your doctor or pharmacist before using any medication.

    What is the dose for a child?

    Based on age, give children ages:

    • 6 to 12 years 2 teaspoons of syrup once a day or 1 teaspoon every 12 hours.
    • 2 to 5 years 1 teaspoon of syrup once a day or half teaspoon every 12 hours -OR- 2 mL of oral drops once a day or 1 mL every 12 hours.
    • 1 to less than 2 years 1 mL of oral drops once or twice a day.
    • 6 to 12 months 1 mL of oral drops once a day.
    • How is Allerkid available?

      Allerkid is available in the following dosage forms and strengths:

      • Oral drops 2.5 mg/mL
      • Syrup 5 mg/5 mL

      What should I do in case of an emergency or overdose?

      In case of an emergency or an overdose, call your local emergency services or go to the nearest emergency room.

      What should I do if I miss a dose?

      If you miss a dose, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.


      Hello Health Group does not provide medical advice, diagnosis or treatment.

      Written by

      Stephanie Nera, RPh, PharmD


      Updated Jul 26, 2021

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