Cetirizine (Zyrtec) — Uses, Side Effects & Interactions

Cetirizine is a medication in the Second-Generation Antihistamine class, sold under the brand name Zyrtec. It is one of the most commonly prescribed medications in the United States. Below you'll find key information about its uses, side effects, and important drug interactions.

What Is Cetirizine Used For?

Cetirizine is prescribed to treat the following conditions:

• Allergies (Allergic Rhinitis)

Your doctor may also prescribe cetirizine for other conditions not listed here. Always take this medication exactly as prescribed and discuss any questions with your healthcare provider.

Common Side Effects

Most people taking cetirizine may experience some of the following side effects, which are generally mild and may improve as your body adjusts:

• drowsiness
• dry mouth
• fatigue
• headache

Drug Interactions

Cetirizine can interact with other medications and substances, potentially changing how the drug works or increasing the risk of side effects. Important interactions include:

• alcohol
• CNS depressants
• theophylline

Always inform your doctor and pharmacist about all medications, supplements, and herbal products you are taking. GProv's AI health navigator, Appi, can help you check for potential drug interactions.

Important Safety Information

This page provides general educational information about cetirizine and is not a substitute for professional medical advice. Do not start, stop, or change the dosage of any medication without consulting your healthcare provider. If you have questions about whether cetirizine is right for you, speak with your doctor or pharmacist.