antihelmintic

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antihelmintic

any drug that acts against helminthic infections, i.e., those caused by parasitic worms. The term vermifuge is often applied to remedies used to remove intestinal worms; only rarely do the agents directly kill the parasites. No anthelmintic is completely effective, completely without toxic effect upon the host, or equally active against all worms.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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