CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER E—ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS (parts 500 to 590) > PART 520—ORAL DOSAGE FORM NEW ANIMAL DRUGS > 520.2520b—Trichlorfon and atropine.

520.2520b—Trichlorfon and atropine.

(a) Chemical name. (1) For trichlorfon: O,O -Dimethyl 2,2,2-trichloro-1-hydroxyethyl phosphonate.
(2) For atropine: Atropine N.F.
(b) Sponsor. See No. 000856 in § 510.600(c) of this chapter.
(c) Conditions of use. (1) The drug is used for the treatment of Syphacia obvelata (pinworm) in laboratory mice.
(2) It is administered in distilled water as sole source of drinking water continuously for 7 to 14 days at 1.67 grams of trichlorfon and 7.7 milligrams of atropine per liter.
(3) Prepare fresh solution every 3 days. Do not use simultaneously with other drugs, insecticides, pesticides, or chemicals having cholinesterase activity, nor within 7 days before or after treatment with any other cholinesterase inhibitor.
(4) Restricted to use by or on the order of a licensed veterinarian.