Someone put me onto this... http://www.petshed.com/item/generic-heartgard I was curious on it so did some research, talking with two different vet clinics. I learned that the generic offered by Pet Shed is the exact same stuff as heartgard...just doesn't come with the flavored, chewable tablet and supposedly tastes terrible to the dog...therefore may not be as effective if they spit it out, but just as effective for a fraction of the price if they keep it down. Another option I learned about was Tri-Heart Plus...a Heartgard generic...supposedly a tastey, chewable tablet, but priced in the middle of the PetShed generic and regular Heartgard. Approximate Price per 12 months from what I have found (Dog >50 lbs)... PetShed Generic - $40 Tri-Heart Plus - $60 Heartgard Plus - $75 with shipping figured in. More info on Tri-Heart Plus Combined with pyrantel pamoate, Tri-Heart? Plus is a pork liver flavored chewable anthelminthic (dewormer) used for the prevention of heartworm disease that also protects against hookworm and roundworm in dogs.Tri-Heart? Plus is a branded generic alternative to Heartgard Plus. Any feedback on the PetShed Generic or Tri-Heart Plus? I have always used Heartgard and just curious about the alternatives. Thanks!