Prednisone & Heartworm Treatment

Heartworms are parasites that can infect many mammals, especially dogs. The microfilaria, or larvae, enter the bloodstream from the bite of a mosquito. The larvae migrate to the heart where they become worms that can grow up to 12 inches in length, blocking blood flow to the heart and eventually causing severe illness or death if left untreated. Prednisone is a supportive medication sometimes used during the treatment of heartworms.

  1. Function

    • Prednisone is a steroid that reduces inflammation caused by the dying and dead worms. Not all dogs require prednisone, but those with fluid accumulation in the lungs or a high amount of worms will likely need the steroid.

    Prevention/Solution

    • According to Maple Small Animal Clinic in New Orleans, prednisone can also prevent pulmonary embolisms--blood clots in the lungs--that sometimes complicate heartworm treatment and lead to death.

    Time Frame

    • When needed, prednisone is usually administered three days before other treatments begin and lasts about 10 days.

    Side Effects

    • Maple Small Animal Clinic lists increased appetite and thirst, along with a greater need to urinate, as the side effects of prednisone. The clinic advises clients to make sure they don't overfeed the dog during treatment.

    Tip

    • The Houston Sheltie Sancturary advises hiding the prednisone in cottage cheese, a hot dog or cream cheese if your dog is difficult to medicate.