Chlorpheniramine Tablets

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Product Details

Chlorpheniramine Tablets

Product Information

Chlorpheniramine is an antihistamine. Antihistamines are used to relieve or prevent the symptoms of allergies. Your veterinarian may prescribe this medication to prevent itching in dogs and cats. It may also be beneficial for managing cats that excessively groom themselves.


Dogs and Cats


Chlorpheniramine is used to control itching, can also be used as a mild sedative.

Active Ingredients


Side Effects

Side effects may include stomach upset, such as diarrhea, vomiting and lack of appetite. Your pet may appear drowsy. This effect may decrease with time. Your pet may experience dry mouth and retain its urine for longer than usual. Notify your veterinarian if these effects are troublesome and continue.

Other side effects may occur. If you notice anything unusual, contact your veterinarian.


Chlorpheniramine should be given orally as directed by your veterinarian.


This medication does not have an FDA approved indication for use in animals, but it is a common and acceptable practice for veterinarians to prescribe this human medication for use in animals.

Use caution in animals with glaucoma, enlarged prostate, severe cardiac disease, high blood pressure, hyperthyroidism, bladder obstruction, obstruction of the pylorus, pregnant and lactating animals.

Make sure to tell your veterinarian what other medication you are giving to your pet. Quite often your veterinarian may prescribe two different medications, and a drug interaction may be anticipated. In this case, your veterinarian may vary the dose and/or monitor your pet more closely. The following drugs can potentially interact with chlorpheniramine maleate: phenytoin, heparin, warfarin and other CNS depressants. Contact your veterinarian if your pet experiences any unusual reactions when different medications are given together.

Allergic reactions to medications may occur. Be sure to inform VetSource and your veterinarian if your pet has any known drug sensitivities or allergies. If your pet displays symptoms of an allergic reaction, call your veterinarian immediately or go to a veterinary emergency clinic. Symptoms may include but are not limited to: swollen lips, tongue, face, airways; difficulty breathing; agitation; profuse salivation; vomiting; widespread hives and itching.