Is half-dose deworming a good idea for horses?


Sometimes, horse owners are tempted to use a half or quarter dose in wormy looking horses. But that’s not recommended, parasitologist Martin Nielsen says.

“I often encounter this practice around the world. People seem worried about triggering some kind of negative adverse reaction if treating with a full effective dose. There is absolutely no evidence supporting this concern and approach.”

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Visit Martin Nielsen’s Network for Good page, and his University of Kentucky page.

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