Common side effects of Zyrtec (cetirizine) can include drowsiness, fatigue, dry mouth, sore throat, and dizziness. Less common side effects include headaches, and nausea. Diarrhea and coughing ...

Cetirizine is a generic over-the-counter medication used to treat certain types of allergies. Learn about its uses, dosage, side effects, and more.

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

Just in time for allergy season, a recent FDA warning describes a new side effect for those who take Zyrtec or Xyzal long-term. This is what you should know.

As pollen peaks for the season, the U.S. Food and Drug Administration is warning that some popular allergy medications could cause a rare but severe itching side effect.. The FDA said in a safety ...

TRENTON, N.J. -- Allergy sufferers who take the popular prescription medication Zyrtec are getting several options that don't require a prescription. Ohm will sell the drug without a prescription ...

The popular allergy drug Zyrtec-D can now sell without a prescription, the Food and Drug Administration announced Friday. Zyrtec-D combines the antihistamine cetirizine with a nasal decongestant ...

The U.S. Food and Drug Administration has issued a warning about a rare but severe reaction that can happen to people who stop taking oral allergy medicines like Zyrtec or Xyzal.