Please be aware...Whole Dog Journal July 2011

One strain of heartworm has developed a resistance to the best known preventives ie Heartgard, Revolution, and Interceptor. Sidebar on article tells you what you can do. Do not stop giving treatment. Read article and ask your doctor if you need more info.

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Permalink Reply by Rebecca Marie O'Bryan on July 6, 2011 at 3:48pm

this isnt good at all! :( teddy was on iveheart max but i switched him over to intercepter because its safer. here in AR heartworm is terrible. what should i do? is there a link to the article? i would just be devastated if he got heart worm even being on a preventive

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Permalink Reply by steve smith on July 6, 2011 at 4:04pm

Whole dog journal has a website that you can go to or ask your doctor and he can tell you the areas of the country that are affected the most. WWW.whole-dog-journal.com

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Permalink Reply by Sam Tsang on July 6, 2011 at 5:32pm

Hi steve, no need to panic, it is isolated in the Mississippi River Valley. The effectiveness of heartworm preventive products vary based on if your dog starts treatment heartworm negative or heartworm positive and that each product has different benefits and risks associated with it. Where you live can also alter the effectiveness. Discuss your heartworm treatment options with your vet to find the best choice for you and your dog. Here's a American Heartworm Society's statement and a DVM's opinion.