Heartworm medicine is a combination of ivermectin, which is a general anti-parasitic, and pyrantel, which is a de-worming agent. Keep a dog up to date on heartworm preventative withinformation from a pet care specialist in this free video on dogs. Expert: Cordell Jacques Bio: Cordell Jacques has worked in the pet industry for more than 10 years, currently working at Huron Pet Supply in Ann Arbor, Mich. Filmmaker: Travis Waack …

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Dog Care & Breed Information : Pet Heartworm Medicine