Question: is fexofenadine the same as cetirizine?
Answer: Allegra (fexofenadine) and Zyrtec (cetirizine) are both antihistamines that are available OTC in brand-name and generic form. Both are available in a variety of formats for dosing preference, such as tablet and liquid form. Allegra and Zyrtec are both used in adults and children.