Q. My dog has class 1 heartworm. Will using heartgard aid in the killing of these hearworms? hes been on it for five months now.

Answered By

A. Heartgard does not kill adult heartworm, only larvae. The method you are describing is the "slow kill" method. This can take 18-24 months to "cure" heartworm disease. Your dog will need to be kept calm and inactive until the condition is resolved. He still is at risk of major organ disease while being treated. Discuss your concerns with your vet regarding prognosis.

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