Drugs for the Deworming War

How do you choose a dewormer when you’re presented with a bewildering array of product types?

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Editor’s Note: This is part eight of a 12-part series on internal parasites of horses.

The shelves at the local co-op or tack shop, and the pages of your animal health product catalog, all feature a bewildering array of dewormers. If you feel confused every time you have to make a decision about anthelmintic selection, it’s no wonder. How do you choose?

Parasite battle
What compounds work against what parasites, how effective they are, and how to use them wisely

In order to make an informed decision, you need to know something about the properties of the drugs. How do they act once they’re inside your horse? What about safety and efficacy? Here’s a primer on the active ingredients in various dewormers that are currently available.

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Written by:

Karen Briggs is the author of six books, including the recently updated Understanding Equine Nutrition as well as Understanding The Pony, both published by Eclipse Press. She’s written a few thousand articles on subjects ranging from guttural pouch infections to how to compost your manure. She is also a Canadian certified riding coach, an equine nutritionist, and works in media relations for the harness racing industry. She lives with her band of off-the-track Thoroughbreds on a farm near Guelph, Ontario, and dabbles in eventing.

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