Zyrtec

Generic name: Cetirizine hydrochloride

What is Zyrtec?

Zyrtec is an antihistamine used to treat the symptoms (eg, itching, redness, or inflammation) of allergies due to multiple causes such as pet dander, dust mites, pollen, ragweed, or grass. Zyrtec also treats chronic itching and hives of the skin.

What is the most important information I should know about Zyrtec?

Zytrec may make you drowsy or tired. You should not drive a car or engage in tasks that require mental alertness such as operating heavy machinery until you know how Zyrtec will affect you. You should avoid drinking alcohol or taking other medications that may make you drowsy or tired while taking Zyrtec. These medications may further decrease your mental alertness and can lead to impairment. You should take Zyrtec with caution if you have any type of liver or kidney problems.

Who should not take Zyrtec?

Do not take Zyrtec if you are allergic or sensitive to any of its ingredients.

What should I tell my doctor before I take the first dose of Zyrtec?

Tell your doctor about all prescription, over-the-counter, and herbal medication you are taking before beginning treatment with Zyrtec. Also, talk to your doctor about your complete medical history, especially if you are over the age of 77, or if you have kidney or liver problems.

What is the usual dosage?

The information below is based on the dosage guidelines your doctor uses. Depending on your condition and medical history, your doctor may prescribe a different regimen. Do not change the dosage or stop taking your medication without your doctor's approval.

Adults: The usual dose is 5-10 milligrams (mg) taken once a day.

Children 12 and older: The usual dose is 5-10 mg taken once a day.

Children 6 to 11 years old: The usual dose is 5-10 mg taken once a day.

Children 2-5 years old: The usual dose is 2.5 mg taken once a day (1/2 teaspoonful of the Zyrtec syrup).

Children 6-23 months: The usual dose is 2.5 mg taken once a day (1/2 teaspoonful of the Zyrtec syrup).

For children ages 12-23 months, your child's doctor may increase the dose to 5mg per day, taken as 2.5 mg twice a day.

How should I take Zyrtec?

Zyrtec doses should be taken at the same time every day and can be taken with or without food.

What should I avoid while taking Zyrtec?

You should not drink alcohol while taking Zyrtec. You should also not drive a car or operate heavy machinery until you know how Zyrtec will affect you.

What are possible food and drug interactions associated with Zyrtec?

If Zyrtec is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your doctor before combining Zyrtec with the following: alcohol, other medications that may make you drowsy or tired, and theophylline.

What are the possible side effects of Zyrtec?

Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking this drug.

Side effects may include: dry mouth, fatigue, headache, nausea, tiredness

Can I receive Zyrtec if I am pregnant or breastfeeding?

The effects of Zyrtec during pregnancy and breastfeeding are unknown. Tell your doctor immediately if you are pregnant, plan to become pregnant, or are breastfeeding.

What should I do if I miss a dose of Zyrtec?

If you forget to take Zyrtec, take it as soon as your remember. If it is closer to your next scheduled dose, skip the dose you missed and take Zyrtec according to your regular dosing schedule. Do not take two doses at once.

How should I store Zyrtec?

Store at room temperature. Zyrtec syrup may be stored at room temperature or under refrigeration.