If you've been taking Zyrtec or Xyzal for your worsening allergy symptoms, there's a new side effect you should know about.

Some patients may suffer from unbearable itching across their entire body after stopping common allergy medications, health ...

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

Although the side effect is rare, the FDA said some patients experienced severe itching that required medical attention.

The U.S. Food and Drug Administration has issued a warning about a rare but severe reaction that can happen to people who ...

Over-the-counter allergy medicines like cetirizine (Zyrtec) and levocetirizine (Xyzal ... like watery eyes and sneezing, but now the FDA indicates that both drugs have a new risk.

WASHINGTON - The FDA has issued a warning about a rare but severe itching side effect linked to popular allergy medications.

The agency will require manufacturers to add a warning to prescription and OTC labeling about the risk of itching and the ...

The itching, known medically as pruritus, was so bad that affected people described “significant and persistent impact on quality of life and ability to function.” ...

USA TODAY has reached out to Kenvue, which manufactures Zyrtec, for comment. The FDA said cetirizine and levocetirizine are the allergy medicines that could cause the itching side effect.

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