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My dog gained weight. Is extra heartworm medicine necessary?

Updated On September 23rd, 2025

Hi my dog was 98 pounds at last visit, and 103 pound at recent. Vet said I needed to order the 100 additional 30 pound heart worm pills to cover the 3 pounds over. Is this really necessary? Greater cost for the additional pills really adds up. thx!

1 Answer

Most Helpful Answer

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Answered By Sara Farmer, DVM

Veterinarian

Published on April 11th, 2019

Yes! These medications are based on weight and this is usually the manufacturer’s recommendation. If your dog is a little overweight this might be an incentive to get him under 100 lbs. Heartworm is a serious disease and the cost of treatment would by far exceed the cost of the extra pills.

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