Interceptor Plus Chew for Dogs

Interceptor Plus Chew for Dogs is our vets’ pick for the best heartworm medication for dogs. This tasty chew is made using real chicken, so even picky pups may struggle to sniff out the medication hidden inside.

Our vets like this dog heartworm medicine the best because it can provide monthly protection against more types of internal parasites than other formulas on this list, including roundworm, hookworm, whipworm, and tapeworm infections. This added defense is great for pups who spend their free time at dog parks. Our vets also like that this option is only needed once a month and is suitable for all dog sizes.

This product contains two medicines, known as anthelmintics, that offer protection from heartworm infections. Milbemycin oxime can bind to chloride in parasites to kill them, and praziquantel controls heartworms by breaking down the skin of the parasite enough to be taken care of by a dog’s immune system.