Allergies Home > Zyrtec Drug Information

Zyrtec® (cetirizine hydrochloride) is an over-the-counter medicine commonly used for treating allergy symptoms, such as itchy or watery eyes, sneezing, and runny nose. It is also licensed to treat itching due to hives (which may or may not be caused by allergies).
There is a lot of important Zyrtec drug information to be aware of before using this antihistamine product. Although the medication is now available without a prescription, you should still consult your healthcare provider before taking it if you have liver disease, kidney disease, or any allergies (including allergies to food, dyes, or preservatives).
Even though most people tolerate Zyrtec well, side effects are possible. The most common side effects that have been reported with this medication include fatigue, drowsiness, and dry mouth. When side effects occur, they are typically minor and either do not require medical attention or can be treated easily.
(Click Zyrtec for more Zyrtec drug information, including details on how this medicine works and other warnings and precautions you should be aware of before starting treatment.)
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
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