Chlorpheniramine for dogs is a popular medication used mostly to reduce itching and to relax or sedate dogs. The medication is an antihistamine, meaning it blocks allergy symptoms.
The dose is going to vary based on the size of the dog, but generally range from 2mg to 8mg every 12 hours. Check with your veterinarian or a pharmacist with a good animal reference like Plumb’s Veterinary Drug Handbook: Pocket
adverse effects seen in dogs are pretty much the same as you would see in humans: drowsiness, sleepiness, vomiting, loss of appetite, diarrhea, dry mouth and difficulty urinating.
One must be extremely careful when dosing, as overdose can cause death. Other overdose symptoms could include seizures, coma and difficulty breathing.
Dosage by weight
The dose can vary from 0.2mg to 0.8mg per kilogram two to three times a day. I will give and example of 0.4mg/kg for a 22 pounds dog.
Convert pounds to kilograms
Simply divide the number of pounds by 2.2 to determine kilograms.
22pounds/2.2 equals 10 kil0grams
10 kilograms times 0.4mg equals a dose of 4 milligrams every 8 to 12 hours
Use extreme caution and contact an expert for correct dosing. Be careful in choosing a single ingredient chlorpheniramine product for your dog. Some products may have other ingredients that may be harmful to your pet.