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Chlorpheniramine 4 Mg Tabs

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Chlorpheniramine 4 mg Tabs 100 ct
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Product Info
How to Use
Customer Reviews
Product Info

What is Chlorpheniramine?

Chlorpheniramine is an antihistamine in tablet form meant to be used for the temporary relief of allergy symptoms in pets. Chlorpheniramine Compounded is also available as a chewable tab, liquid, or transdermal.


Cats and Dogs


  • Begins to work within 1 hour

How does Chlorpheniramine work?

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


While in 4mg strength it's over-the-counter, there are possible negative interactions with other medications. Consult with your veterinarian. Side effects may include drowsiness, vomiting, diarrhea, lack of appetite, dry mouth, and urinary retention. Do not store in the bathroom, as it's sensitive to moisture.

Brand Name:

Chlor-Trimeton (Schering-Plough)

Generic Name:


What is the most important thing I should know about Chlorpheniramine?

Chlorpheniramine is an antihistamine used in the treatment of contact, inhaled or drug-induced allergies in dogs and cats. It is also used to treat miliary dermatitis in cats.

How Chlorpheniramine be 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.

What are the potential side effects of Chlorpheniramine?

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

What should I avoid while giving Chlorpheniramine to my pet?

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

What happens if I overdose my pet on Chlorpheniramine?

Contact your veterinarian or veterinary emergency room. Symptoms of overdose may include excitement or seizure, drowsiness, coma, respiratory depression and death.

What other drugs will affect Chlorpheniramine?

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. 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. Do not use in pregnant or lactating animals. Always tell your veterinarian and pharmacist what other medications your pet is taking.

How to Use
  • Chlorpheniramine 4mg tablets are an over-the-counter (OTC) product.
  • Chlorpheniramine 4mg tablets are an antihistamine used to treat allergies.

Chlorpheniramine can interact with other medications. Check with your pharmacist or veterinarian before giving this medication to pets taking other medications.

All weights
1/2 - 2 tablets every 8-12 hours
All weights
1/4 - 1/2 tablet every 8-12 hours
Do not use!

Should be stored at room temperature.

Active Ingredient (per tablet)
Chlorpheniramine maleate
4 mg
Other Ingredients: (per tablet) D&C Yellow #10, lactose, magnesium stearate, microcrystalline cellulose, pregelatinized starch.
Customer Reviews
Chlorpheniramine 4 Mg Tabs is rated 4.0 out of 5 by 90.
Rated 5 out of 5 by from Allergy pills for cats Chlorpromazine When I got the pills I started them on the tablet and they worked instantly. I am so happy with this product. The price was really good. Thank you for the help.
Date published: 2016-11-15
Rated 5 out of 5 by from Great stuff I bought this acouple weeks ago and the results are great.My cat is not itching,and just seems so much better
Date published: 2016-10-17
Rated 1 out of 5 by from WARNING! DO NOT BUY! The vet recommended this for my cat because of his sneezing and some coughing and she thought he had allergies. I gave the dose the vet recommended to him every day for three weeks. I stopped when I noticed his excessive scratching, clumps of fur on the floor and his now lethargic behavior. Before this product ALL my cat had was sneezing and coughing and NOW he is lethargic with a skin condition. Now it’s back to the vet in the hopes we can fix his scratching problem.
Date published: 2016-02-13
Rated 5 out of 5 by from Really helped my cat! I have a Sphynx cat who has been extremely itchy since day one. I found that just half a pill a day does wonders for him! He is no longer all scratched up and miserable.
Date published: 2016-02-01
Rated 5 out of 5 by from Gabrielle is a rescue and came with allergies galore! Not to sound gross but snot would go everywhere when she sneezed which was way to often. She is an older cat with very persnickety tastes... she doesn't know she is taking this medication. I crush it up and put it in her wet food at night... 1/2 a pill. What a difference! Amazing! Thank you!
Date published: 2016-01-30
Rated 5 out of 5 by from Worked for me Roxy our cat was scratching and pulling her hair out. Tried Benadryl, taste was bad but it did work but if pill didn't go right down she would foam at the mouth. So I tried this product which seems to work. I only give her half pill in morning and half at night with feeding. I crush and mix with wet food and she seems to take it no problem. I also added more fish to her diet which also seems to help with some dry skin. Overall very happy with results and hair is starting to grow back.
Date published: 2015-06-12
Rated 4 out of 5 by from Less sneezing My pug's nose is always running. One dose in the morning when the dripping is worst does the trick for four hours.
Date published: 2015-04-03
Rated 3 out of 5 by from Not Great My poor white boxer scratches so much. He has skin allergies and was getting prednisone shots from his vet and they did help for a little while. I wanted to try something else and thought this may help, but its just like benadryl. I guess he will be going back to the vet for something else.
Date published: 2014-11-30
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Will chlortab help with nasal congestion? My 46 lb pup has year round allergies, Apoquel, Benadryl, and Temaril P doesn't help with nasal congestion.

Asked by: Missy
According to the labeling of this product, 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. We advise to please speak to your veterinarian to make sure this would be okay for your furry pet.
Answered by: Amy Petmed Pro
Date published: 2017-02-13

I have been giving my cat 5mg of Loratadine for his allergies and they have completely cleared his sores he was developing. My question is, would  Chlorpheniramine be comparable and or safer to give my cat?

Asked by: OzziesMom
Unfortunately since Customer Service Representatives are not a licensed medical professional we are not able to answer your question. We would have to advise you to consult your veterinarian.
Answered by: Amy Petmed Pro
Date published: 2016-12-22

can this be taken with phenobarbital?

Asked by: Cheryll
Antihistamines, such as Chlorpheniramine, may increase the effects of Phenobarbital. Speak with your veterinarian first before giving Chlorpheniramine to your pet.
Answered by: Christine
Date published: 2016-10-14

My dog was taking Chlorpheniramine given by the vet I was using at the time. I moved and changed vets and read where it was the same as Chlorotrimentin. I bought the generic Chlor tabs. Is that the same as Chlorpheniramine ? Can I give it to my dog?

Asked by: Demi14
Yes, Chlor-Trimeton is the brand of Chlorpheniramine Maleate.
Answered by: Christine
Date published: 2016-10-12

Can I crush this pill and mix it with water to use a syringe to get my cat to take it?

My cat is having a hard time taking pills. He fights so hard against taking it, it turns into a very stressful situation. I'd like to crush it up. mix it with water and syringe shoot it into his mouth. Is there any issues with getting it into him this way? He is an 18lb cat and the vet said to take an entire 4mg pill.
Asked by: Anonymous
I got this from my veterinarian. They gave me a pill shooter. You put it inbetween their side teeth and the pill lands on the back of the tongue. It takes seconds and your cat won't know what happened. 
Answered by: Junet
Date published: 2017-03-07

Alermine 4mg

I have a Pomerian and she has had a bad cough I found some pills but not sure what they are I want to check before I give them to her. It's Alermine 4mg I want to make sure these are what I need to give her. they have a pyramin and 016 on them and yellow in color is this just a different pharmacy brand or something else.
Asked by: Anonymous
Please contact your local Poison Information Center to help identify the tablet in your possession.
Answered by: Lilli Pharmacist
Date published: 2014-10-27

How soon will side effects show?

I have a mini dachshund with allergies. I have been giving her .25 of a tablet twice a day for the past 5 days. She has vomited twice today and was wondering if this could be a side effect of the medicine. Could she begin to have side effects on her 5th day of taking the medication?
Asked by: Anonymous
Side effects are usually seen sooner; however, it may be possible. Consult your veterinarian to rule out other causes.
Answered by: Lisa M
Date published: 2015-05-14

what is identifying number on pill

Asked by: Anonymous
Thank you for your question. The identifying number is 44 194.
Answered by: Anonymous
Date published: 2014-06-29
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