There are two stages of heartworm disease in cats. Stage one is the infection stage, and stage two is when the cat starts showing severe symptoms due to inflammation in the heart and lungs. This stage can be fatal.

Unfortunately, there's no treatment available for cat heartworm.

Keep water moving in your cat's environment. Avoid stagnant water. If there are any bowls left outside, rinse them and keep them as clean as possible. Also, try to control the mosquito population as they play a role in transmitting heartworm disease.

If you miss a dose of your cat's prevention, give them their next dose immediately. We will then need to retest them in six months.

We do not recommend any holistic or over-the-counter heartworm prevention for cats.

Unfortunately, prevention cannot be used to clear a heartworm infection in cats.

I highly recommend a heartworm test even if your cat is on prevention. There have been a few reported cases of resistance to heartworm prevention, so it's best to ensure your cat is safe.

Heartworm prevention is 100% effective in cats.