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My dog had heartworms. Why does he still have a raspy voice?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | unneutered | 8 years old | 18 lbs

He has been to the vet for heart warms but I think he still has them some as he is raspy voice when worked up ever now and then. What should I do? He was told to take medication and no heart warm prevention tell they were gone.

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1 Answer

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Answered By Christie Long, DVM

Veterinarian, Certified Veterinary Acupuncturist

Published on July 27th, 2017

I don't typically appreciate a raspy voice with heartworm disease, although it can definitely cause coughing. The definitive treatment for heartworm disease is typically a series of intramuscular injections that are given by a veterinarian, so I'm not sure what oral treatment you were given, unless it was the antibiotic doxycycline which is often used to treat a potential secondary infection, or the anti-inflammatory predisone, which controls the clinical signs (coughing). Neither of these is a definitive treatment, so I'm worried that something got confused in the instructions you were given, and I would strongly recommend calling the vet who made the heartworm diagnosis and having a conversation about what comes next.

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