What Can I Give My Dog for Heartworm?

Heartworm disease is a serious and potentially life-threatening condition that affects dogs and other animals. It is caused by a parasitic worm called Dirofilaria immitis, which is transmitted through the bite of an infected mosquito. If left untreated, heartworm disease can cause serious damage to a dog’s heart and blood vessels, and can even be fatal.

If your dog has been diagnosed with heartworm disease, it is important to follow your veterinarian’s treatment plan and give your dog the appropriate medications. Here is a list of some of the medications that may be prescribed for heartworm treatment:

  1. Melarsomine (Immiticide): This is a medication that is used to kill adult heartworms. It is given as an injection directly into the muscle, and may need to be given multiple times at intervals.
  2. Doxycycline: This is an antibiotic that is often given in combination with melarsomine to help kill the heartworms and prevent secondary infections.
  3. Prednisone: This is a corticosteroid that is used to help reduce inflammation in the body. It may be given to help reduce the inflammation caused by the dying heartworms as they are being killed off by the melarsomine.
  4. Praziquantel (Droncit): This is a medication that is used to kill the larval stage of the heartworm, which can help prevent new worms from developing.
  5. Heartworm preventive medications: After your dog has completed treatment for heartworm disease, it is important to give them a preventive medication to help prevent future infections. Some common preventive medications include ivermectin (Heartgard), milbemycin oxime (Interceptor), and selamectin (Revolution).

Heartworm treatment can be expensive and time-consuming, and it can also be potentially dangerous for your dog. That is why it is so important to give your dog a preventive medication on a regular basis to help prevent them from getting infected with heartworms in the first place.

If you have any questions or concerns about heartworm treatment or prevention for your dog, it is always a good idea to consult with your veterinarian. They will be able to provide you with the most up-to-date and accurate information, and can help you come up with a treatment plan that is right for your dog.


Hannah Elizabeth is an English animal behavior author, having written for several online publications. With a degree in Animal Behaviour and over a decade of practical animal husbandry experience, Hannah's articles cover everything from pet care to wildlife conservation. When she isn't creating content for blog posts, Hannah enjoys long walks with her Rottweiler cross Senna, reading fantasy novels and breeding aquarium shrimp.

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