
As with any medicine, side effects are possible with Zyrtec. However, not everyone who takes the drug will experience side effects. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or can easily be treated by you or your healthcare provider.

Zyrtec tablets, chewable tablets, and Children's Hives Relief syrup are approved for use in children as young as six years old. Children's Zyrtec Allergy syrup is approved for use in children age two years and older.

DRUG CLASS AND MECHANISM: Cetirizine is the fourth addition to a new generation of allergy medications called "non- sedating" antihistamines or histamine (H-1) receptor blockers. These new antihistamines are called non-sedating because they cause less sedation than their predecessors; however, cetirizine is more sedating than the other non-sedating antihistamines.

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