Just found this thread, and am interested in any other feedback from vets/vet techs/vet pharmaceutical experts on DT re the use of Heartguard vs Interceptor, in addition to what has been posted here.
One of the posters on this thread who described a dog contracting heartworm while on Heartguard has since been found to have some credibility issues:
Roman was on heartguard and contracted a mild case of heartworm. The vet can tell how progressive the heartworm is by the color of the test module. He was treated for the heartworm, got his negative test, has been on Interceptor since. Heartworm, "all" worm negative since. (2 years). Our vet says that it has happened before in some dogs taking Heartguard, but he had personally never had the experience of any of his patients taking Interceptor, contracting heartworms, or any other kinds of worm. Interceptor also gets into the dogs bloodstream faster, and is absorbed by more relevant tissue.
We used Interceptor for most of the years with Scout, then our vet switched to Heartguard Plus. Scout always tested negative (annual) for HW. Foster (rescue) tested neg for HW when we came to us (but had tapeworms); he currently receives Heartguard Plus.
Interesting note that on our Heartguard Plus box, the clinic rx label says "for the prevention of heartworms, roundworms, hookworms, whipworms
Just a side note. Our Merial rep said that Heartgard plus does get whipworms but they can't go back and get the label for it because the beef chew would no longer be approved. Whipworms aren't a big problem around here, so not sure what to believe.
Kahlua - did the Merial rep explain further WHY the beef chew would no longer be approved with a label re: whipworm?
So far, it looks like the poll is 50-50. Trying to decide whether to switch [back] to Interceptor from Heartguard Plus. Will also be asking for our vet's most current opinion.
BTW - thanks for this thread/poll, Burns!