Atarax For Dogs. Atarax or vistaril) is an antihistamine indicated for allergy treatment in dogs and cats. Histamine is a chemical that is released in the body in response to inflammation or allergy.

But their diet should not exceed a certain amount of calories per day, so if you increase treats you have to give less food which means fewer nutrients.|if you do exceed the normal amount of treats your dog is supposed to have per day; Hydroxyzine, also known by the specific brand names anxanil, vistaril and atarax, is a type of medicine that is regularly prescribed to dogs for the treatment of allergy symptoms. Some of the things it is used for include: