Chlorpheniramine Maleate (Generic) Tablets, 4-mg, 1 tablet

Prescription Item

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Chlorpheniramine Maleate is an antihistamine that's prescribed to manage allergies and atopy. It helps manage allergy symptoms such as sneezing, itchy eyes, itchy throat and a runny nose. Best of all, this medication can even start working within an hour of administration. Customers may receive this drug under the names Chlor-tabs, Chlor-Trimeton.


Chlorpheniramine is an oral medication indicated to manage allergies and atopy (itchy inflammation of the skin).

Possible Side Effects

Possible side effects may include drowsiness, vomiting, diarrhea and lack of appetite. Dry mouth and urinary retention may also occur.

Drug & Food Interactions

Do not use chlorpheniramine when it is in combination with other medications such as acetaminophen or caffeine such as found in various cold and sinus products. Use caution when given with phenothiazines such as acepromazine and other central nervous system (CNS) depressant medications. Chlorpheniramine should not be used with monoamine oxidase inhibitors (MAOIs) such as selegiline and Preventic tick collar. Use caution when given with metoclopramide. Always tell your veterinarian and pharmacist what other medications your pet is taking.


This medication should not be used in animals allergic to chlorpheniramine or similar antihistamines. Do not use in pregnant or lactating animals. Do not use in pets with glaucoma, prostate disease or urinary obstruction, stomach or intestinal obstruction, high blood pressure or hyperthyroidism.

NOTE: For Generic Medications, picture displayed may not depict actual product. Generic medications may vary from one order to the next by size, color and shape depending on manufacturer. Customers may receive the same drug under the names Chlor-tabs, Chlor-Trimeton.

This drug is FDA-approved for human use. However, it is common practice for veterinarians to prescribe such drugs for use in dogs and cats.

  1. Prescribing Information

See all items by Chlorpheniramine

  • Item Number
  • Brand


  • Dosage Measure

    Use according to your veterinarian's instructions.

  • Common Brand Name(s)

    Chlor-tabs, Chlor-Trimeton

  • For Use With

    Dogs & Cats

  • Generic Name

    Chlorpheniramine Maleate

  • Product Form


  • Health Condition


  • Drug Type




Recommended Dosage

Give this medication by mouth according to your veterinarian's instructions.

Storage Instructions

Store between temperatures of 59° - 86°F.


What is Chlorpheniramine?

An antihistamine that is given orally in order to manage allergies and atopy in dogs and cats.

What are the benefits of Chlorpheniramine?

  • Economical and effective.
  • Helps manage your pet's allergy symptoms.
  • Begins working within an hour.

How is this medication given?

Chlorpheniramine is not FDA approved for use in veterinary medicine; however, it is a commonly accepted practice to use this medication in dogs and cats. The usual dose for dogs is 2-8mg every 8-12 hours. For cats the usual dose is 1-2mg every 8-12 hours. Do not open or crush the long-acting capsules.

How does this medication work?

Chlorpheniramine works to remedy contact, inhaled, or drug-induced allergies in dogs and cats by blocking the effects of histamine in the body.

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