Chlorpheniramine is an antihistamine meant to be used for the temporary relief of allergy symptoms in pets.
Cats and Dogs
This medication 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.
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.
Chlorpheniramine is available as tablets; long-acting capsules and tablets; and syrup.
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.
Side effects may include drowsiness, vomiting, diarrhea, and lack of appetite. Dry mouth and urinary retention can also occur.
This medication should not be used in animals allergic to chlorpheniramine or similar antihistamines. 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. Do not use in patients with glaucoma, prostate disease or urinary obstruction, stomach or intestinal obstruction, high blood pressure or hyperthyroidism. 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.
Contact your veterinarian or veterinary emergency room. Symptoms of overdose may include excitement or seizure, drowsiness, coma, respiratory depression and death.
Keep this medication in the container it came in, tightly closed. Store at room temperature, away from excess heat, light, and moisture. Do not store in the bathroom. Throw away any medication that is outdated or no longer needed. Keep out of the reach of children and pets.
Chlorpheniramine can interact with other medications. Check with your pharmacist or veterinarian before giving this medication to pets taking other medications.
Should be stored at room temperature.