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Heartworm prevention for cats refers to treatments designed to protect cats from heartworm disease, a serious condition caused by parasitic worms transmitted through mosquito bites. Even indoor cats are at risk, and because heartworm disease in cats is difficult to treat, prevention is the safest and most effective approach.
Heartworm prevention products for cats are typically easy-to-use and administered monthly. Common options include topical spot-on treatments (applied directly on the skin around the neck area), as well as combination parasite preventatives that also protect against fleas and intestinal worms. Regular use helps keep your cat protected year-round.
Heartworm disease is a serious, potentially fatal disease caused by parasitic roundworm that infects pets, primarily dogs and cats, through mosquito bites. These worms live in the heart, lungs, and blood vessels, growing up to 30cm long, and can cause severe organ damage, heart failure, lung disease, and in some cases, sudden death.
Heartworm is a silent danger for cats, as they often show few or no symptoms at all until the disease has progressed. Key heartworm symptoms to look out for include:
There is no approved treatment for cats once infected, so year-round heartworm protection is the only safe option. Even a small number of heartworms can cause severe health problems, posing a serious and potentially fatal risk to your feline friend.
Thankfully, there is comfort in knowing that there are a wide variety of heartworm prevention options available for cats, including oral and topical alternatives. The difference between these products depends on you and your feline friend’s preferences, but the most important thing is that your pet is protected all-year around through consistent preventative control and treatment.
CanadaVet offers a wide range of the vet-approved heartworm preventatives for cats available in the market at an affordable price, from trusted brands you know and love, including:
Alongside heartworm control, it is important to also ensure your pet is protected against intestinal worms and fleas and ticks for optimal protection and overall health. Explore all parasite prevention products for cats.
Is it really necessary to prevent heartworm?
Yes! There is no approved treatment of heartworm for cats once infected, so prevention is the only safe option to protect your cat against the serious and potentially fatal health risks that can be caused by heartworm disease
Do indoor cats need heartworm prevention?
Yes! Heartworm is transmitted through mosquitos, which can be active indoors and outdoors, making protection essential for both indoor and outdoor cats.
How often should I give my cat heartworm prevention?
Consistency is key to maintaining protection year-round, with most products requiring a monthly application. Always follow the directions on the product packaging and set reminders so you never miss a dose.
Are there any side effects of heartworm prevention treatment for cats?
Heartworm prevention treatments for cats are generally safe when used as directed, but some cats may experience mild side effects. These can include temporary irritation at the application site, vomiting, diarrhoea, or reduced appetite. In rare cases, more serious reactions such as lethargy or neurological symptoms may occur, so it’s important to monitor your cat after treatment and contact your vet if you notice anything unusual.
Is heartworm prevention safe for kittens?
Yes, but age and weight requirements vary. Always check the product label before use.
Do I need a prescription for heartworm control?
No, you don’t always need a prescription. We’re based in Australia, where many heartworm prevention treatments for cats are available over the counter. This means you can purchase genuine, vet-approved heartworm control products online and have them delivered to your door without needing a prescription or additional vet visit.
What Do I Do If I Think My Cat Has Heartworm Disease?
If you suspect your cat has heartworm disease, contact your veterinarian as soon as possible. Symptoms in cats can be subtle or sudden and may include coughing, difficulty breathing, vomiting, or lethargy.
There is no simple or fully effective treatment for heartworm disease in cats, so early diagnosis and supportive care are critical. Your vet may recommend diagnostic testing and a treatment plan to manage symptoms and stabilise your cat. Regular use of heartworm prevention remains the best way to protect against the disease.