§ 520.1326b Mebendazole and trichlorfon paste.
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Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
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Specifications.(a) Each gram of paste contains 100 milligrams of mebendazole and 454 milligrams of trichlorfon.
Sponsor.(b) See No. 000061 in § 510.600(c) of this chapter.
Conditions of use in horsesAmount.(c) —(1) 8.8 milligrams of mebendazole and 40 milligrams of trichlorfon per kilogram of body weight.
Indications for use.Gastrophilus intestinalisG. nasalisParascaris equorumStrongylus edentatus, S. equinus, S. vulgarisOxyuris equi(2) It is used in horses for treatment of infections of bots ( and ), large roundworms (), large strongyles (), small strongyles, and pinworms ().
Limitations.(3) Do not administer more than once every 30 days. Do not treat sick or debilitated animals, foals under 4 months of age, or mares in the last month of pregnancy. Trichlorfon is a cholinesterase inhibitor. Do not administer simultaneously or within a few days before or after treatment with, or exposure to, cholinesterase-inhibiting drugs, pesticides, or chemicals. Do not administer intravenous anesthetics, especially muscle relaxants, concurrently. Not for use in horses intended for food. Consult your veterinarian for assistance in the diagnosis, treatment, and control of parasitism.
[51 FR 13212, Apr. 18, 1986, as amended at 62 FR 61625, Nov. 19, 1997; 78 FR 28824, May 20, 2014]
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