Heartworms can be deadly to your pet, but Interceptor® (milbemycin oxime) Flavor Tabs® will kill heartworms before they have a chance to harm him.
Almost a million dogs in the U.S. are infected with heartworms each year.¹ Adult heartworms can cause heart and lung damage, even death.
Common symptoms include coughing, lack of energy, labored breathing, and weight loss.

Prevention is key.

Using a heartworm preventative like Interceptor Flavor Tabs on the same date each month is the best way to protect your pet against this life threatening disease.

One mosquito bite is all it takes to infect an unprotected dog.

Heartworms are transmitted by mosquitoes year-round and are found in dogs that live indoors and outdoors.²

Interceptor Flavor Tabs kill heartworm larvae before clinical signs of disease occur.

ALWAYS have your dog tested for heartworms before starting a preventive regimen. Giving a preventive to a dog that is already heartworm-positive can cause further complications.

If your dog tests positive for heartworms, your veterinarian will discuss a treatment plan with you.

If left untreated, larvae develop into immature heartworms between days 50 and 70. Adult heartworms restrict blood flow, resulting in pathology or damage to the heart and lungs and possibly even death.


Dogs and cats should be tested for heartworm prior to use. In a small percentage of treated dogs, digestive and neurologic side effects may occur. In cats, safety studies at up to ten times the label dose did not detect any adverse drug reactions. To see the full product insert, click here.  

1. D. Bowman et al. "Prevalence and geographic distribution of D. immitis, B. burgdorferi, E. canis, and A. phagocytophilum in dogs in the US: Results of a national clinic-based serologic survey" Veterinary Parasitology 160 (2009) 138-148
2. Heartwormsociety.org
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