Tag: Zyrtec vs Allegra

Cetirizine vs Fexofenadine: Which Antihistamine Has Fewer Side Effects?

• Robin Tudge
• December 29, 2025
• 0 Comments

Cetirizine and fexofenadine both treat allergies, but one causes drowsiness in up to 15% of users. Learn which one is better for staying alert, working safely, or getting fast relief without the crash.