|Don’t Forget Pyrantel Equine Dewormers|
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Don’t Forget Pyrantel Equine Dewormers
By Dr. Dave Ellefson
In the age of “less-is-more” deworming strategies, an often forgotten dewormer choice is pyrantel. Pyrantel belongs to a class of dewormers known as tetrahydropyrimidines. The tetrahydropyrimidines (pyrantel pamoate and pyrantel tartrate) mimic the activity of acetylcholine, a naturally occurring neurotransmitter that initiates muscular contraction. Pyrantel salts induce the same muscle-contracting effect as acetylcholine, but the resulting contraction is irreversible. This results in rigid paralysis, so the worm is unable to feed and quickly starves. Pyrantel has the fastest activity of any of the major deworming classes used in horses.
So, with this information in mind, where does pyrantel fit into a dewormer program? Here are two distinct, applications for pyrantel dewormer: