5-10 kg
Chihuahua, Pomeranian
11-22 mg dose
10-25 kg
Beagle, Cocker Spaniel
22-55 mg dose
25-40 kg
Labrador, Golden Retriever
55-88 mg dose
40+ kg
Great Dane, Mastiff
88+ mg dose
This Benadryl calculator for dogs helps Canadian pet owners determine the safe dosage of diphenhydramine (Benadryl) based on their dog's weight. Benadryl is a common over-the-counter antihistamine that many veterinarians recommend for treating allergic reactions, motion sickness, or minor anxiety in dogs. While this benadryl calculator for dogs provides accurate estimates, determining the proper dosage is essential for your pet's safety.
Our benadryl calculator for dogs uses the standard veterinary guideline of 2.2 mg per kilogram of body weight, given every 8 to 12 hours. This benadryl dosage calculator ensures you're using the correct amount β giving your dog too much can cause harmful side effects, while too little may not provide any benefit. Always use plain diphenhydramine without additional ingredients like acetaminophen or pseudoephedrine, which can be toxic to pets.
This free benadryl calculator for dogs is designed specifically for Canadian dog owners who need to convert their pet's weight in kilograms to the appropriate dosage. Simply enter your dog's weight into the calculator above, and it will instantly calculate both the total dose in milligrams and the equivalent number of standard 25mg tablets. Whether you have a small Chihuahua or a large German Shepherd, this benadryl calculator for dogs provides accurate dosing for all sizes.
Use this benadryl calculator for dogs when your pet shows signs of allergic reactions such as swelling, itching, sneezing, hives, or reactions to insect bites. The calculator can also help determine dosing for travel anxiety or motion sickness. However, always consult your veterinarian before using this benadryl calculator for dogs, especially if your dog is pregnant, has glaucoma, heart disease, or takes other medications.