Heartworm: Symptoms, Treatment & Prevention

What is Heartworm?

Dog heartworm is a parasite that lives in the heart and lungs of dogs and is spread by mosquitos. This disease is usually fatal without treatment and contrary to popular belief, is present Australia wide. It is vital to protect your dog against heartworm.

How do I prevent my dog from getting heartworm?

Prevention comes in the form of:

We recommend that a heartworm detection test is carried out prior to treatment if your dog is over six months of age.

What are the symptoms of heartworm in dogs?

The most common symptoms of heartworm in dogs are coughing and an intolerance to exercise. If your dog is showing either of these signs it is best to chat with your vet.


Most ‘all wormers’ do not prevent heartworm

How to treat heartworm

Treatment for heartworm depends on the severity of the infection as well as the health of your pet. The only treatment is veterinary pharmaceutical treatment so it is best you chat with your vet for advice. As they say, prevention is better than cure so ensure your dog is protected from an early age.

For more dog health care information, learn more about dog worms, vaccinations and flea prevention.

Our Recommended Products


  • Broad spectrum intestinal wormer that if given monthly, also offers prevention against heartworm.
  • For the treatment of internal parasites, roundworm, hookworm and tapeworm.

Heartguard Plus Worming Treatment

  • Given monthly, eliminates stages of heartworm in your dog’s tissues.
  • Also protects against Roundworm and Hookworm.

Interceptor Spectrum Tasty Chew Worming Treatment

  • For the prevention and control of heartworm and intestinal worms.
  • Will prevent heartworm and control roundworm, whipworm, hookworm and adult tapeworms.


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