The most common option is to sneak it into their food. Can You Give A Dog Benadryl for Allergies? While Zyrtec can be an ...

Moreover, if you don't administer the right dosage, it could also be harmful to your dog. Over-the-counter antihistamines such as Claritin (loratadine) and Zyrtec (cetirizine) can be used to treat ...