Zyrtec D

Generic name: Cetirizine hydrochloride and pseudoephedrine hydrochloride

What is Zyrtec D?

Zyrtec D is used to treat the nasal and non-nasal symptoms of seasonal and perennial allergies due to multiple causes in adults and children 12 years and older. Zyrtec D contains two different medications: cetirizine (an antihistamine) which stops itching, redness, or inflammation (heat) due to allergies or other causes; and pseudoephedrine (a decongestant) which relieves the nasal symptoms (stuffiness or runny nose) associated with allergies.

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

Do not Zyrtec D if you have taken a medicine called an MAOI (monoamine oxidase inhibitor) within the last 14 days. Using Zyrtec D with an MAOI may reduce its antihypertensive effects.

Who should not take Zyrtec D?

You should not take Zyrtec D if you have taken a medicine called an MAOI (monoamine oxidase inhibitor) within the last 14 days, if you cannot completely empty your bladder, or if you have an eye condition called narrow-angle glaucoma, severe high blood pressure, or severe coronary artery disease. Also, you should not take Zyrtec D if you are allergic or sensitive any of its ingredients, or a similar medication called hydroxyzine.

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

Tell your doctor about all prescription, over-the-counter, and herbal medication you are taking before beginning treatment with Zyrtec D. Also, talk to your doctor about your complete medical history, especially if you have any type of liver or kidney problems, high blood pressure diabetes, ischemic heart disease, increased intraocular pressure (increase in the pressure inside the eye), narrow angle glaucoma, an overactive thyroid, trouble emptying your bladder, or an enlarged prostate.

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 one tablet (contains 5 milligrams (mg) of cetirizine and 120 mg of pseudoephedrine) taken twice a day.

Children Age 12 And Older: The usual dose is one tablet (contains 5 mg of cetirizine and 120 mg of pseudoephedrine) taken twice a day.

How should I take Zyrtec D?

Zyrtec D doses should be taken at the same time every day and can be taken with or without food. Zyrtec D tablets should be swallowed whole—do not break or chew the tablets.

What should I avoid while taking Zyrtec D?

You should not drink alcohol while taking Zyrtec D. Zyrtec D may cause drowsiness, therefore you should also not drive a car or operate heavy machinery until you know how it will affect you.

What are possible food and drug interactions associated with Zyrtec D?

If Zyrtec D 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 D with the following: alcohol, mecamylamine, methyldopa, monoamine oxidase inhibitors (MAOIs), other medications that may make you drowsy or tired, reserpine, and theophylline.

What are the possible side effects of Zyrtec D?

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, tiredness, trouble sleeping (insomnia)

Can I receive Zyrtec D if I am pregnant or breastfeeding?

The effects of Zyrtec D 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 D?

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

How should I store Zyrtec D?

Store at room temperature.