Jan. 15, 2026

A case where heartworm prevention seemed toxic

A case where heartworm prevention seemed toxic

Bill and his guest Dr. Michael Dym, VMD will discuss how it happens, what they do to the body and how to rid and safeguard against them..

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I had a client this past week come in with

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a big Burmese bound dog that was on heartworm prevention.

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It came up from the north down from the northeast,

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and the dog presented with severe coughing, and you know,

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it was getting worse on the heartworm protocol treatment, which

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includes antibiotics and steroids and and uh. And then again

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the the you know, the adult is the poison, the

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arsenic poison that's injected to kill the adults. Well, this

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dog never made it that far. It just I think

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from all the toxicity of the heartworm prevention. And again

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they said, oh, it must be resistant heartworms, and so

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all ended up, you know, they say, oh, it's just

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because the preventatives aren't working because they're resistant, so we

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have to come up with stronger ones or different ones.

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So anyway, this poor dog had was positive for heartworms,

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was getting worse with treatment. And then they did X

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rays and found the dog a surprise surprise, unfortunately, had

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cancer throughout its lungs too as well.