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My dog has heartworms. Is ivermectin the best treatment option?

Updated On September 23rd, 2025

Pet's info: Dog | American Bully | Female | unspayed | 50 lbs

I my dog tested positive for adult heartworms will ivermectin treat her?

1 Answer

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on February 7th, 2019

Yes and no. There are two different protocols for treating heartworm infections. The first is a rapid kill method and this is generally preferable to a slow kill method. The rapid kill method will be completed within two months including the cage rest. This protocol tends to be preferred because it decreases damage to the heart from the worms. It does carry some potential side effects such as anaphylactic reactions and potential embolisms from dead worms. Some pets are not a candidate for this protocol. This protocol uses a specific medication called Immidicide. The slow kill method does utilize drugs like ivermectin. The worms will not be completely killed for 1 to 3 years and so on going damage is possible. During this time the dogs must make sure to take all the medications on time and as prescribed. Talk to your veterinarian about which option is best for Hollywood. I hope this is helpful and please feel free to post any additional questions.

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