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Heartworm Prevention For Cats
Reviewed by Dr. Melissa Witherell, DVM
There’s no FDA-approved treatment for feline heartworm disease, which makes heartworm prevention for cats essential. Heartworm is a parasite transmitted through the bite of an infected mosquito. Once a cat is infected, the parasite spreads through their body via the blood, causing inflammation and damage as it goes. Treatment is tricky for cats and the complications related to heartworm disease can be fatal, so prevention is key.
Here are some factors to consider when buying heartworm prevention for cats:
- Dosage: Your cat’s dosage requirements may vary depending on their age or body weight
- Frequency: Most heartworm preventives require monthly administration
- Form: Topical solutions, oral liquids, and chewables are the most common forms of heartworm prevention for cats
- Active ingredients: Look for cat-safe parasiticides like selamectin, ivermectin, and milbemycin oxime
Compared to dogs, cats aren’t considered ideal hosts for heartworm. That doesn’t mean that cats are immune to infection. Talk to your vet about the best heartworm prevention option for your cat, and whether they recommend conducting a heartworm test first. Consistency is key when it comes to heartworm prevention for cats, so use Chewy’s Autoship to keep your supply steady.
Frequently Asked Questions about Heartworm Prevention For Cats
Do I need a prescription for heartworm prevention for cats?
Yes, you need a veterinary prescription to purchase heartworm prevention for cats.
Do cats really need heartworm prevention?
Experts, including the American Heartworm Society, recommend heartworm prevention for cats. Both outdoor and indoor cats can be exposed to infected mosquitoes, even if cats are statistically less likely to develop heartworm disease than dogs.
What medications do vets recommend for heartworm in cats?
Vets recommend preventive heartworm medications that contain cat-safe parasiticides like selamectin and ivermectin. These medications are intended to prevent infection, not treat disease—there is currently no FDA-approved treatment for heartworm disease in cats.
Do cats get heartworm easily?
Cats are more resistant to heartworm infection than dogs but, once infected, their mortality rate is higher due to treatment challenges. Heartworm can only be transmitted through the bite of an infected mosquito.
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