A. The generic name for Zyrtec is cetirizine. The generic name for Xyzal is levocetirizine. That means they share a very similar chemical structure. Both drugs are considered nondrowsy antihistamines.

Taking medication for an allergic reaction? You might face severely itchy skin as a side effect of Zyrtec or Xyzal, according to a recent FDA warning for long-term users. Here's what you need to know.

FDA warns of severe itching risk when stopping long-term use of allergy medications cetirizine and levocetirizine, affecting quality of life for some users.

But the cost became prohibitive, so he suggested Zyrtec at bedtime. While it’s not quite as good as Elmiron, Zyrtec is working for me. My question is, how safe is it to stay on Zyrtec indefinitely?

In a new review, experts call for the removal of diphenhydramine from over-the-counter and prescription markets in the United ...

Two antihistamines, including Zyrtec, are under warning by the FDA after people reported “severe itching” after ceasing long-term use of the drugs—what to know.

The FDA warns that longtime users of popular allergy medications may experience "severe itching" after stopping use.