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U.S. Department of Health and Human Services

CFR - Code of Federal Regulations Title 21

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The information on this page is current as of Oct 01, 2021.

For the most up-to-date version of CFR Title 21, go to the Electronic Code of Federal Regulations (eCFR).

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Help | More About 21CFR
[Code of Federal Regulations]
[Title 21, Volume 6]
[CITE: 21CFR520.602]



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

PART 520 -- ORAL DOSAGE FORM NEW ANIMAL DRUGS

Sec. 520.602 Dichlorvos gel.

(a) Specifications. Each milligram (mg) of gel contains 2.27 milligrams (mg) dichlorvos.

(b) Sponsor. See No. 069043 in § 510.600(c) of this chapter.

(c) Conditions of use in horses - (1) Amount. Administer 20 mg per kilogram of body weight for the removal of bots and ascarids. Repeat administration every 21 to 28 days for the control of bots and ascarids. For the control of bots only, the repeat dosage is 10 milligrams per kilogram of body weight every 21 to 28 days during bot fly season.

(2) Indications for use. For the removal and control of first, second, and third instar bots (Gastrophilus intestinalis and G. nasalis ), sexually mature and sexually immature (4th stage) ascarids (Parascaris equorum ) in horses and foals.

(3) Limitations. Do not use in horses intended for human consumption. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

[83 FR 48945, Sept. 28, 2018]

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