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Chlorpheniramine 4mg

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Chlorpheniramine 4mg - 100 Tablets
$7.99 $7.59

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Chlorpheniramine 4mg tablet is an antihistamine used in both cats and dogs.


Chlorpheniramine 4mg tablet works on external and inhaled allergies by blocking the natural occurring effects of histamine within the body. This product has also been used for milt cases of feline dermatitis (skin allergy).


Allergies are highly common in humans as well as our pets. The itchy, scratching change of the season can cause the body to turn red with bumps or hives. These allergic reactions can be mild or severe enough to require medical attention. An allergy refers to the bodies over reaction to a foreign pathogen. Allergies in pets can be caused by a number of agents such as chemical reactions, reactions to vaccines, allergies to drugs, or allergies to bites from insects. Urticaria, or hives, is a sign of an allergic reaction. A severe reaction may result in the pet being covered with hives, swelling around the face and eyes, or even drooling. The most commonly seen locations for a pet to develop these hives are between the digits, the groin, underneath the limbs, the muzzle, ankles, wrists, and ears.

Atopic dermatitis is a term that refers to a condition resulting in inflamed skin. Atopic dermatitis can occur from any external element from air-born allergies such as dust to mold, or grass. A pet which has Atopic dermatitis may also loose hair due to intense itching. Hives or skin irritations may not be visible on long haired pets therefore pet handlers will note physical signs. Physical signs in which a pet may display include continuous scratching, biting or licking at the skin, or rubbing their bodies along the ground. A secondary condition of allergies is an atopy reaction. This is a reaction due to the pet’s predisposition or hereditary trait. This form of Atopic Dermatitis requires a long term therapeutic treatment of the allergen in small doses.


Allergies are the body’s immune response to a foreign pathogen. In order to prevent said immune response from occurring, pet owners must be aware of the aliments. Pet aliments associated with this condition include; inflammation hives, swelling around the face and eyes, or even drooling.


Dogs breeds most commonly affected by this aliment includes; Shar-pei (Chinese shar-pei),Bichon frise, Boston terrier, Boxer, Cairn terrier, Cocker spaniel, American, Dalmatian, English setter, Fox terrier, wire hair, Golden retriever, Irish setter, Labrador retriever, Lhasa apso, Poodle, miniature, Pug, Schnauzer, miniature, Scottish terrier, West Highland white terrier, American pit bull terrier, Norwich terrier, Skye terrier


1.What steps should I take if my pet has adverse effects from product?

Adverse reactions have been reported while using this medication with other prescribed medications. Contact your veterinarian or emergency center promptly.

2. How long will the product take to begin working?

Begins to work within 1 hour.

3. Will this product interact with my pet’s medications?

This product has been reported to interact with other medications. Talk to your veterinarian before use of this product.

4. What side effects should I be aware of in response to medication interactions?

Pets will develop symptoms such as urinary retention, dry mouth, decreased appetite, diarrhea, vomiting, or drowsiness.

5. How do I recognize when I have overdosed my pet?

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

6. What prescription medications are known to interact with this product?

Use caution when given with phenothiazines such as Acepromazine as well as other central nervous system (CNS) depressant medications. Chlorpheniramine should not be used with selegiline and metoclopramide or Preventic tick collar.

7. What over the counter medications are known to interact with this product?

Do not use with other medications such as acetaminophen or cold medications.

8. Can I place the tablets in food for my pet to take the product?

Antihistamines are known to upset the stomach in some pets therefore food can be taken for this reason. Pet handlers should avoid using foods high in dairy content as dairy decreases effectiveness.

9. How long can my pet stay on Chlorpheniramine?

Long term use of this product is not recommended. Speak with your veterinarian before long term use.

10. My pet is currently on heart guard for heart worms, do I need to stop use while on this product?

No, this product will not interact with heart guard.
Product Cautions

Keep out of reach from children.

Not intended to be used in pregnant or lactating females.

Not to be used in animals allergic to Chlorpheniramine or similar antihistamines.

Do not use expired or moisture contacted medication.

Pets: Do not use in patients with glaucoma, prostate disease or urinary obstruction, stomach or intestinal obstruction, high blood pressure or hyperthyroidism.

Humans: Avoid contact with eyes. Wash hands thoroughly after handling medication.

Storage: Store in cool, dry location in an air tight container. Product is highly sensitive to moisture retention.

Disposal: Dispose un-used or empty containers as directed on the label. Never re-use containers and always recycle or dispose. If you have any questions, contact your local medical waste agency for directions or contact 1-800-CLEANUP for additional information.


Chlorpheniramine is the generic form of this product. The brand name of Chlorpheniramine is Chlor-Trimeton or Schering-Plough. This product is available in a syrup, tablet, and long lasting capsule form. The generic form of this product is slightly less in price and contains the same active ingredients.

How it Works:


Histamine is a nitrogen compound naturally found within the body. This specialized organic structure functions in the immune response and is triggered when foreign pathogens enter the body. This response of histamine is a neurotransmitter, inflammatory response caused by a signal from the brain. Chlorpheniramine 4mg works by reaching the receptor of the neurotransmitter before the allergen, preventing an inflammatory response.




Allergen enters the body, triggering histamine.

Chlorpheniramine blocks histamine receptors.

DIRECTIONS FOR USE: Product is prescribed off label by veterinarian. Follow veterinary recommendations for use.


Although Chlorpheniramine is not FDA approved for use in veterinary medicine, this product is veterinary approved to be used off label.

Dogs & Cats:

Dogs: 2-8mg per 8-12 hours.

Cats: 1-2mg per 8-12 hours.

Do not crush tablets.




Active Ingredient (per tablet)


Chlorpheniramine maleate

4 mg

Other Ingredients: (per tablet)
D&C Yellow #10, lactose, magnesium stearate, microcrystalline cellulose, pregelatinized starch.


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