- Drug Name: Hydroxyzine
- Common Name: Atarax®, Vistaril®, Anxanil®
- Drug Type: Antihistamine
- Used For: Allergies
- Species: Dogs, Cats
- Administered: Tablets, Capsules, Oral liquid, Injectable
- How Dispensed: Prescription only
- FDA Approved: No
Hydroxyzine is an antihistamine used in the treatment of allergic reactions, as with snake and insect bites, vaccine reactions, alopecia, and other causes of itchy, inflamed skin. It has anti-nausea, sedative, anti-inflammatory, anti-anxiety, and anesthetic properties.
How It Works
Antihistamines counteract histamine, which is a chemical released to cause inflammation and itchiness as part of an allergic reaction. Hydroxyzine works by blocking H-1 receptors, which occur on the small blood vessels and smooth muscles. When histamine attaches to these receptors, it causes these vessels to widen causing inflammation and itchiness and muscles around the airways to contract, which causes difficulty breathing.
Keep in a tightly sealed container at room temperature.
If you miss a dose, give the dose as soon as possible. If it is almost time for the next dose, skip the missed dose, and continue with the regular schedule. Do not give your pet two doses at once.
Side Effects and Drug Reactions
Hydroxyzine may result in these side effects:
- Increased urination
- Trouble urinating
- Change in behavior
- Dry Mouth
Hydroxyzine may react with these drugs:
- CNS depressants or any other sedative
DO NOT GIVE HYDROXYZINE TO PREGNANT OR LACTATING PETS
USE CAUTION WHEN ADMINISTERING THIS DRUG TO PETS WITH HEART PROBLEMS, GLAUCOMA, AN ENLARGED PROSTATE, OR ANY OBSTRUCTION IN THE INTESTINE OR BLADDER