Active Ingredient: Centrizine

Common Brand Name(s): Zyrtec

Zyrtec is mainly used to treat symptoms of allergies like sneezing, runny nose, itching, tearing and redness of eyes and hives. Zyrtec works as an antihistamine by blocking actions of naturally occurring chemical histamine in the body.

What is Zyrtec used for?

o Zyrtec is used as an antigistamine which blocks the actions of the naturally produced acids in the body. Zyrtec has comparatively lesser side effects than other antihistamines.

o Zyrtec is mainly used to treat allergic ailments such as sneezing, runny nose, itching, tearing and redness of eyes, and hives.

o Apart from the above uses, Zyrtec may be used for some other purposes.

How Do I Use Zyrtec?

o You must follow doctor’s direction for use of Zyrtec. If you have any doubt about use of Zyrtec you must consult your doctor, nurse or a pharmacist. They will be able to guide you the correct way of using Zyrtec.

o Take Zyrtec with adequate quantity of water.

o You can take Zyrtec before meals.

o You should chew the chewable tablets thoroughly, if taking chewable tablets.

o If you are taking Zyrtec in liquid form, use measuring spoon, cup or dropper to ensure correct in take of medicine.

o You can take Zyrtec with or without food.

How should I Store Zyrtec?

You can store Zyrtec at normal room temperature. However, you must ensure that the storing place is free from moisture and away from the heat.

What are the possible Side Effects?

o There are no serious side effects of Zyrtec as such. However, if you experience any allergic reaction like breathing difficulty, closing of throat, swollen lips, tongue, face or hives, stop taking Zyrtec and visit your doctor for immediate medical attention.

o If you experience other side effects which are less serious don’t stop use of Zyrtec. However you must consult your doctor if you develop symptoms like drowsiness, dizziness, and headache or mouth dryness.

o You may notice any other unusual side effects other than those enlisted here. In such case you must consult your doctor who will provide required medical treatment.

What should I do if I miss a dose?

You can take the missed dose immediately after you remember it. However you must keep in mind the time of your next dose. If there is sufficient time gap you can take the missed dose. If your next scheduled dose is nearing then skip the missed dose and take the regular scheduled dose in time. Never double your dose to make up for missed dose.

If you are using Zyrtec on as required basis, take the missed dose if it is need, but you must maintain the prescribed gap before you take next dose.

What should I do if I overdose?

If you suspect the overdose or develop unusual symptoms, you must consult your doctor for immediate medical attention. Exact symptoms of Zyrtec overdose are not known. However Drowsiness is considered as one of the symptoms.

Is Zyrtec Safe?

If you are suffering from liver disorders, you may not be able to use Zyrtec. Your doctor may make dose adjustment to suit you and closely monitor effects of the dose.

If you have allergic reaction to Zyrtec or medicines like Atarax and Vistaril, you must consult your doctor before taking Zyrtec.

There are no proven results available regarding effects of Zyrtec on the unborn baby. However, you must consult your doctor if you are pregnant.

There are no proven results to confirm that Zyrtec passes into breast milk and it may affect the nursing baby. You must consult your doctor before using Zyrtec, if you are breast feeding your baby.

Your doctor may prescribe you lower dose of Zyrtec if you are over 65 years of age. Aged people are likely to experience side effects of Zyrtec.

Zyrtec may cause drowsiness. If you experience this side effect, avoid driving, operating machinery and other hazardous activities.

If you are taking Zyrtec, avoid alcohol. Alcohol may increase drowsiness.

You must tell your doctor that you are taking Zyrtec, before your doctor prescribes you other medicines. Do not use other allergy medicines or cough; Cold medicine without consulting doctor, if you are taking Zyrtec.

Medicines like antidepressants, sedatives, pain relievers, anxiety medicines, muscle relaxants and other antihistamines increase drowsiness or dizziness when taken with Zyrtec. Consult your doctor on use of these medicines when you are taking Zyrtec.

How does Zyrtec interact with other medicines?

If you are taking any of the following medicines, you must inform your doctor regarding this before using Zyrtec. You may require dose adjustment and close monitoring, if you are taking these medicines.

o Antidepressants

o Sedatives

o Medicines for treating anxiety like diazepam, alprazolam, Iorazepam, Restoril, Librium etc.

o Pain relievers

o Muscle relaxants

o Other antihistamines

Never take other allergy or antihistamine medicines without consulting your doctor.

Some other drugs, other than those listed above may have interaction with Zyrtec. You must consult your doctor even before using vitamins, minerals and herbal products.

What other information should I know?

o You should continue use of Zyrtec as per your doctor’s advice till you get complete relief.

o Chew the chewable tablet thoroughly and use measuring spoon, cup or dropper for taking Zyrtec in liquid form.

o Take your Zyrtec on scheduled time and period as directed by your doctor.

o You must consult your doctor if you experience any unusual occurrence of side effect.