What is the most important information I should know about hydroxyzine: Hydroxyzine is not FDA approved for use in veterinary medicine; however, it is a commonly accepted practice for veterinarians to use this medication in dogs. The usual dose of hydroxyzine in dogs is 1mg per pound every 6 to 8 hours. It is not recommended for use in cats. Hydroxyzine may cause drowsiness or dizziness.

What is Hydroxyzine: Hydroxyzine is an antihistamine. It blocks the effects of histamine in the body making it useful to treat allergic conditions that affect the skin such as hives, itching and rashes. Hydroxyzine depresses activity of the central nervous system and is also used to treat anxiety disorders and tension in stressful situations. Hydroxyzine may be used for other purposes than those listed in this guide.

What should I discuss with my veterinarian before giving hydroxyzine to my pet: Tell your veterinarian if your pet has heart, liver or kidney disease. Tell your veterinarian if your pet pregnant, lactating.

How should this medication be given: Follow the instructions on the prescription label. If you do not understand these directions ask your pharmacist or veterinarian to explain them to you. Store hydroxyzine at room temperature away from moisture and heat.

What happens if I miss giving a dose: Give the missed dose as soon as you remember. However, if it almost time for the next regularly scheduled dose, skip the missed dose and give the next one as directed. Do not give a double dose of the medication.

What happens if I overdose the pet: Seek emergency veterinary medical attention if you think you have used too much of this medication. Symptoms of overdose may include extreme drowsiness, nausea, vomiting, seizures, and decreased breathing.

What should I avoid while giving Hydroxyzine: Hydroxyzine can cause drowsiness and dizziness.

What are the possible side effects of Hydroxyzine: Seek emergency veterinary medical attention if your pet experiences any signs of an allergic reaction (hives; difficulty breathing; swelling of the face, lips, tongue, or throat). Keep giving Hydroxyzine and talk to your veterinarian if your pet develops any of these less serious side effects; dizziness, drowsiness, or confusion; blurred vision or dry mouth; nausea or vomiting. Talk to your veterinarian about any side effect that seems unusual or that is especially bothersome to your pet.

What other medications will affect Hydroxyzine: Tell your veterinarian if your pet is using any of the following medications; chlorpheniramine (Chlor-Trimeton), celmastine (Tavist), meperidine (Demerol), Phenobarbital, acepromazine, amitriptyline (Elavil), fluoxetine (Prozac). Tell your veterinarian about all prescription and non-prescription (OTC) medications, including vitamins, minerals, and herbal products.