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Frequently Asked Questions

What is Hydroxyzine Pamoate?

Hydroxyzine Pamoate is a prescription medication antihistamine used to treat allergies, flea bite dermatitis, and atopy. It is used primarily to stop itching and may also be prescribed for its sedative qualities.

Hydroxyzine Pamoate is for horses, dogs, cats, and as well as other small animals as prescribed by your veterinarian.

  • Helps treat hives, allergies, flea bite dermatitis, and atopy

  • Helps stop itching

  • Fewer side effects than corticosteroids

Hydroxyzine Pamoate works by blocking the actions of histamine in the body. Histamine is the chemical responsible for many of the symptoms seen when an allergic reaction occurs.

Hydroxyzine Pamoate is the generic form of Vistaril.

This medication is given orally. Always follow the dosage instructions provided by your veterinarian. Duration of treatment depends on the reason for and response to treatment. This medication should only be given to the pet for which it was prescribed. If you have difficulty giving the medication, contact your veterinarian.

Hydroxyzine Pamoate will generally start to work within several hours, but several days of therapy may be needed to achieve the full effect.

This medication comes in capsule form.

Hydroxyzine pamoate

Talk to your veterinarian about what type of outcome is expected. Have your veterinarian explain the other treatment options that may be available to treat your pet's condition.

Tell your veterinarian if your pet has an enlarged prostate, urinary tract obstruction, heart disease, glaucoma or stomach or intestinal obstruction.

Notify your veterinarian of any other medications or supplements your pet is taking. Also if your pet has had any reactions to previous medications.

If you miss a dose, give it as soon as you remember. If it is almost time for the next dose, skip the one you missed and go back to the regular schedule. Do not give two doses at once.

Understand what outcome is expected, and if results are not achieved, contact your veterinarian. Monitor for possible side effects.

Not for use in animals hypersensitive (allergic) to hydroxyzine or similar medications. Use with caution in animals with hypothyroidism, heart disease, glaucoma, enlarged prostate, severe cardiac failure, or obstruction of the urinary bladder (problems urinating), or obstruction of the pylorus (junction between the stomach and intestine).

Use in pregnant and lactating animals (female animals nursing their young)only if benefits outweigh their risks. Use with caution in working animals (military dogs, police dogs, seeing eye dogs, hearing dogs, working horses, etc.) as it may cause too much sedation.

Discontinue use at least 7 days prior to skin allergy testing.

In horses, hydroxyzine is a classified drug. Consult your veterinarian and event officials before using hydroxyzine or any other medication in performance horses. Not for use in horses intended for food.

In all animals:May see sedation.

Dogs:Less commonly seen are excitement, fine tremors, whole body tremors, or seizures.

Cats:May see increased thirst or other behavioral changes.

Consult your veterinarian if you notice any of the above side effects. If your pet experiences an allergic reaction to the medication, signs may include facial swelling, hives, scratching, sudden onset of diarrhea, vomiting, shock, seizures, pale gums, cold limbs, or coma. If you observe any of these signs, contact your veterinarian immediately.

Store in a tight, light-resistant, childproof container at room temperature. Keep out of reach of children and pets.

Should overdose occur, you may see excessive sedation or low blood pressure (weakness). If you observe any of these signs in your pet, contact your veterinarian immediately.

Consult your veterinarian before using Hydroxyzine with any other medications, including vitamins and supplements, other central nervous system (CNS) depressant drugs such as barbiturates, antidepressants, anesthetics, or tranquilizers; anticholinergic drugs, atropine, heparin, or epinephrine, since interactions may occur. No known food interactions.
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