Allergies Home > Side Effects of Zyrtec-D

While most people have no problems with Zyrtec-D, side effects are possible. A few commonly reported side effects include nosebleed, sore throat, insomnia, and dry mouth. Fortunately, most side effects seen with the drug are mild and easily treated. However, side effects that may indicate a problem include rapid heart rate, seizures, and hallucinations.

An Introduction to Side Effects of Zyrtec-D

As with any medicine, side effects are possible with Zyrtec-D® (cetirizine and pseudoephedrine). However, not everyone who takes the drug will have problems. In fact, most people tolerate it quite well. If side effects occur, in most cases, they are minor and either require no treatment or are easily treated by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with Zyrtec-D. Your healthcare provider can discuss a more complete list of Zyrtec-D side effects with you.)

Common Zyrtec-D Side Effects

Zyrtec-D has been studied thoroughly in clinical trials, in which the side effects of a group of people taking the drug are documented and compared to another group not taking the medicine. As a result, it is possible to see what side effects occur, how often they appear, and how they compare to the group not taking the medicine.
In these studies, the most common side effects of Zyrtec-D included:
Other common side effects (occurring in 1 to 2 percent of people) included:
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Last reviewed by: Kristi Monson, PharmD;
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