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?
2 Answers
Most Helpful Answer
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.
1Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on August 22nd, 2018
Hi there and thank you for using Petco Pet Education Center, formerly Petcoach to address your concern. Heartworm infected dogs can either be asymptomatic or symptomatic. The cases that are very severe typically need the immiticide treatment to kill the worms quickly and effectively. If dogs are asymptomatic or there are financial concerns, then the Ivermectin and Doxycycline slow kill method is a good option. I've used this method in about 5 heartworm cases (we don't see many where I practice) and all of the cases responded well. If she is asymptomatic or the symptoms are very mild, I would suggest trying the slow kill method to see if it works. If she worsens, then you may have to transition her to the immiticide therapy. I hope this helps guide you in the right direction! Please let me know if you have any other questions or concerns and I would be more than happy to help you further.
1Pet Parents found this answer helpful
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