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Can I give a heartworm positive dog Heartgard?

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Yes, it is recommended in the American Heartworm Society's Guidelines to do so. This should be done under the direct supervision of a veterinarian because dogs with microfilaria (baby worms in the blood that the mosquito picks up when feeding) could possibly have a reaction to the preventive.


Can I give Heartgard to a dog with heartworms?

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.

What happens if you give a dog with heartworms interceptor?

If your dog is switching from another heartworm preventative medication, wait until the next dose to begin Interceptor. Do not start Interceptor if your dog hasn't been tested for heartworms or is heartworm-positive. Giving Interceptor to a dog with heartworms can cause serious injury and even death.

Will HEARTGARD Plus kill heartworms?

Ivermectin prevents heartworm disease by killing heartworm larvae that have infected your dog during the previous 30 days. By killing the larvae, HEARTGARD Plus stops larvae from developing into juvenile and adult heartworms, thereby preventing the disease.

What can you not do with a heartworm positive dog?

Your veterinarian is going to advise you that your heartworm positive dog should not do activities that keep the dog's heart rate elevated. This means your heartworm positive dog should not run, jump, sprint, go for long walks, play chase, fetch, have zoomies, run up and down the stairs, and the like.

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