(If you do not have a prescription on file with us we will contact your veterinarian. Please provide your veterinarian's name and phone number when checking out. Or you can call or email us with the information.)
Use as directed by your Veterinarian. Hydroxyzine HCl is an antihistamine commonly used to treat allergies or itching in horses. The most common side effect is sedation. Atarax is another name for hydroxyzine HCl.