The American Heartworm Society has recommended that heartworm prevention be used year round.. The American Heartworm Society has recommended that heartworm prevention be used year round. Administered once a month, Heartgard Chewables for Cats are a tasty, flavored heartworm preventative for cats over 6 weeks of age. A prescription from your veterinarian is required to purchase Heartgard Chewables. A prescription from your veterinarian is required to purchase Heartgard Chewables. Iverhart Max for dogs is used to prevent heartworms, while also controlling hookworms, roundworms and tapeworms in dogs heartgard plus chews dog 12pk 26 50 lbs 6 weeks and older and weighing at least 6 lbs. Iverhart Plus contains the same active ingredients and is the same strength, but is pork liver flavored as heartgard chew 51 100 lbs (brown) opposed to the beef flavoring of Heartgard Plus. Given once a month to your dog 4 weeks and older heartgard plus chews dog 6pk 26 50 lbs or cat 6 weeks and older, Interceptor Flavor Tabs prevent heartworm disease while controlling adults hookworms, and removing and controlling adult whipworm and roundworm infections. A prescription from your veterinarian is required to order Iverhart Max. Iverhart Plus for dogs is used to prevent heartworms, while also controlling hookworms and roundworms in dogs 6 weeks heartgard plus chews dog 6pk 51 lbs and older.

Administered once a month, heartgard chews cat 6pk red 1 5 lbs Heartgard Chewables Dog are a tasty, flavored heartworm preventative for dogs over 6 weeks of age. Iverhart Max is given monthly, and uses its anthelmintic (deworming) properties, and the active ingredient pyrantel pamoate, to treat and control hookworms and roundworms in dogs. Heartgard Plus Chewable Tablets for Dogs 51 100 lbs Heartgard Plus Chewables for Dogs are a tasty, flavored way to treat and control roundworms and hookworms, while preventing heartworms in dogs over 6 weeks of age. The American Heartworm Society has recommended that heartworm prevention be used year round. Interceptor Flavor Tabs are the only oral monthly preventative around that will protect against heartworms while also removing adult roundworms and hookworms.. Iverhart Plus (ivermectin/pyrantel) is a generic equivalent heartgard chews dog 6pk 1 25 lbs to Heartgard Plus.