what is the best over the counter medicine for pet allergies?
Over-the-counter (OTC) antihistamine tablets include fexofenadine (Allegra Allergy), loratadine (Claritin, Alavert) and cetirizine (Zyrtec Allergy); OTC antihistamine syrups are available for children. Prescription antihistamine tablets, such as levocetirizine (Xyzal) and desloratadine (Clarinex), are other options.