You can't give your pet preventative medication if he is already infected with heartworm. This can actually cause health complications for your pet to become even more serious if he does indeed have heartworm.
Can you give Heartgard to a dog with worms?
With HEARTGARD® Plus (ivermectin/pyrantel), you can treat and control hookworms and roundworms in your dog.
What happens if you worm a dog with heartworm?
Heartworm preventives do not kill adult heartworms. Also, giving a heartworm preventive to a dog infected with adult heartworms may be harmful or deadly. If microfilariae are in the dog's bloodstream, the preventive may cause the microfilariae to suddenly die, triggering a shock-like reaction and possibly death.
Are heartworms and intestinal worms the same?
What is Heartworm? Like intestinal worms, heartworm disease is a result of an internal parasite and rather than taking over and living in the intestinal tract of a dog; worms live in the heart, lungs, and associated blood vessels.
Does heartworm medication prevent other worms?
Yes, a number of heartworm preventives used today also are effective against certain intestinal parasites. Depending on the product, these may include hookworms, roundworms, whipworms and tapeworms.
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