N-Butyl Chloride

N-butyl chloride is a veterinary antiparasitic (anthelmintic) drug. N-Butyl chloride (Happy Jack Worm Capsules) is approved by the FDA for the removal of ascarids (Toxocara canis and Toxascaris leonina) and hookworms (Ancylostoma caninum, Ancylostoma braziliense, and Uncinaria stenocephala) from dogs.

N-butyl chloride (Sergeants® Sure Shot® Capsules) is approved by the FDA for the removal of the ascarids (Toxocara cati) and hookworms (Ancylostoma tubaeforme) from cats. It is also used for the removal of ascarids and hookworms from dogs. Most anthelmintics have little or no activity against migratory stages of the ascarids. "Oldtimers," in particular such as plant extracts, dithiazanine, toluene, and dichlorophen combinations, n-butyl chloride, disophenol, or piperazine have a narrow spectrum of activity either against adult hookworms or ascarids only, and their toxicity is rather high. Some of these older drugs are still used in the USA and elsewhere. The use of anthelmintics with a narrow spectrum of activity may be indicated if a specific infection is diagnosed regularly. Because labor costs are high and correct diagnosis is too time consuming in certain situations it makes sense to deworm dogs and cats with current products showing activity against all common intestinal round worms and tapeworms. Thus current routine dewormers for dogs and cats are highly effective in eliminating intestinal stages of ascarids (especially Toxocara canis), common hookworms, whipworms, and tapeworms. Products which meet all these requirements are drug combinations consisting of benzimidazole carbamates or probenzimiadozoles praziquantel. Most of them are available in the USA and Europe.

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