Zyrtec is in the class of drugs referred to as second-generation antihistamines.

Urticaria(hives) appear as part of the allergic response, often due to food or medication allergies.

These red, itchy bumps on the skin can form a rash, often associated withangioedema(swelling).

A man’s legs covered in an allergic reaction

Lode Kuylenstierna / EyeEm / Getty Images

You also may experience dizziness or weakness.

Some people with a known severe allergy may need to carry anepinephrine auto-injector.

Side Effects of Zyrtec

Zyrtec has a low incidence of side effects and is usually well-tolerated.

Common side effects include:

Some research has also linked regular use of antihistamines like Zyrtec with weight gain.

Who Can Take Zyrtec?

Your pediatrician can help you find the best antihistamine for your child.

Your allergist or healthcare provider can advise you on the best antihistamine during pregnancy.

Taking Zyrtec is not advised for people who are nursing.

Taking it daily, however, may result in better overall control of allergy symptoms.

You also should be cautious about its use with other sedative medications, including alcohol and tranquilizers.

It is possible to have an allergic reaction to Zyrtec itself.

A 2018 study on treating hives found Zyrtec andAllegra (fexofenadine)were among the most effective second-generation antihistamines.

They can rule out other health conditions to diagnose an allergy or help with a referral to an allergist.

You also can discuss your treatment options, including othercommon allergy treatments.

Summary

Zyrtec is an over-the-counter antihistamine that is used to relieve hives and symptoms of allergic rhinitis.

It is in a class of drugs known as second generation antihistamines.

While Zyrtec is generally considered safe and effective, talk to your healthcare provider before using it.

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