Tracy Brown wrote:
>Just wanted to clarify.... There are NO heartworm preventatives. Only
>heartworm insecticides which kill the larvae already circulating in
>the blood. When you give a dose of heartworm meds, you are killing
>heartworms that are already present before they grow into the adult
>heart-clogging worms. There is no medicine that PREVENTS heartworms.

I think you're into sematics. The drugs given ARE actually preventives.
They PREVENT the onset of heartworm DISEASE. The shortcut of calling
them preventives is completely acceptable.

Katharine
Florida

[Posted in FML 7044]