Zyrtec for kids is available for oral intake as tablets, dissolving tablets, chewable tablets, and syrups. It is also available as grape- or bubble-gum-flavored chewable tablets or syrup for convenience. Effects of Zyrtec in children may begin within an hour after intake and last for about a day (12-24 hours). Zyrtec, commonly known by the generic name cetirizine, is a non-drowsy antihistamine prescribed to reduce the effects of the chemical histamine in the body. Histamine causes symptoms such as swelling, itching, sneezing, runny nose, and watery eyes that are commonly seen in allergies and colds. It is also used for treating chronic urticaria (hives) in children. Read this post to know more about the dose, safety, side effects, warnings, and other common concerns about Zyrtec for children.

At What Age Can Cetirizine (Zyrtec) Be Given To A Child?

Zyrtec can be safely given to children aged two years and above. The FDA disapproved of its use for infants and children younger than two years. Seek a pediatrician or doctor’s prescription before giving Zyrtec to two- to six-year-old children (1).

Cetirizine (Zyrtec) Dosage For Children

You may seek a primary care provider or pediatrician’s advice for the appropriate doses of medication based on your child’s age, weight, and health status. The following table may help you understand the dosage of cetirizine (Zyrtec) for allergy in children (1). The dose mentioned above is for educational purposes only and is not a substitute for doctors’ prescriptions or advice. Consult a pediatrician before giving medications to a child for allergic symptoms such as runny nose and hives. The doctor may prescribe Zyrtec based on your child’s age and the severity of symptoms.

Safe Use Of Cetirizine (Zyrtec) For Children

The safety and efficacy of Zyrtec are not guaranteed for children under two years of age. Take the following safety measures when giving Zyrtec to children (2):

Do not give cetirizine to a child with previously known hypersensitivity or allergic reactions. Children with renal (kidney) impairment and liver impairment may require dose adjustment according to their condition. Zyrtec is not recommended for children with poor renal function. Give the medications as per the doctor’s prescription to avoid overdosing. Use syringes or droppers to measure the dose of liquid (syrup or solutions) medications. You may use measuring spoons to measure the medication. Regular spoons may not be reliable. Store the medication at room temperature. Do not store in hot and moisturized places. Do not freeze the liquid medications. Seek the pediatrician’s advice to know how often, how, and how much to give. Check expiration dates while purchasing medications. Read the manufacturer’s information to know about drug interactions, side effects, and warnings. Do not give medications to siblings following another person’s prescription. Give medications until the prescribed duration. Seek medical advice if the symptoms do not improve. Keep Zyrtec out of the child’s reach.

Over-the-counter treatment is not recommended for a long duration. It is recommended to seek pediatric consultation to identify the cause of allergies and the best treatments.

Cetirizine (Zyrtec) Side Effects And Warnings In Children

Some children may develop side effects such as vomiting and stomach pain after taking Zyrtec (2). Seek emergency medical help if your child shows any of the following signs of an allergic reaction after taking Zyrtec (3).

Hives Difficulty breathing Swelling of tongue, lips, throat, or face

Stop giving Zyrtec or cetirizine to children and contact the doctor if your child develops any of the following side effects (3).

Uneven, pounding, or fast heartbeat Hyperactivity Severe restlessness Weakness Sleep issues (insomnia) Uncontrolled shaking (tremors) Oliguria or anuria (reduced or no urination) Confusion Vision problems

Other common side effects of cetirizine may include (3)

Tiredness Drowsiness or lightheadedness Sweating and feeling hot Tingling or numbness Burning pain Reduced sense of taste Stomach upset Nausea Constipation Headache Sore throat Dry mouth

Some children may experience other signs and symptoms after taking Zyrtec or cetirizine. Seek medical advice if your child has any unusual signs and symptoms after taking the medication. You can also report the side effects to the FDA (in the US) or an equivalent organization in your country.

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