Chlorpheniramine Maleate (Generic) Tablets, slide 1 of 1

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

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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 uncoated tablet under the names Chlor-tabs, Chlor-Trimeton.

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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.

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.

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. Please note product may arrive in a Chewy Pharmacy vial.

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  1. Prescribing Information

See all items by Chlorpheniramine

  • Item Number
  • Common Brand Name(s)
    Chlor-tabs, Chlor-Trimeton
  • For Use With
    Dogs & Cats
  • Generic Name
    Chlorpheniramine Maleate
  • Administration Form
  • 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.

Rating: 3.6 of 5 stars 3 Reviews 3 Reviews 3.7 out of 5 Stars

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67% Recommend

67% of reviewersrecommend this product

Rating: 3.6 of 5 stars 3.7 / 5

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3 Reviews

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  • 5 out of 5 stars

    This helped my 17 year old cat.

    By PashasMom on Mar 9, 2021 top500Contributor

    My vet recommended this medication for my indoor only 17 year old cat, who after some blood tests was determined to have allergies. Everything else was normal. I had to split the pills in half and give her a half every 12 hours. We had no problem as the pill was tiny, and she took it easily. I also had a company come to my house to clean out all the duct work, which made a huge difference. She did not have skin itching or rashes, just lots of sneezing going on. She tolerated the pills well.

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  • 5 out of 5 stars

    No more scratching

    By Roger on Mar 14, 2020

    My GS was in misery I had tried everything but nothing worked. No time at all and she was not gouging and chewing her self to death. It is a miracle

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  • 1 out of 5 stars

    Dont use for cats

    By Paddy on Aug 26, 2019

    Vomiting 3 nights in a row and now to the v e t... And he only got a tiny bit of the tablet.

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