21 CFR § 520.1194 - Ivermectin meal.

---
identifier: "/us/cfr/t21/s520.1194"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 520.1194 - Ivermectin meal."
title_number: 21
title_name: "Food and Drugs"
section_number: "520.1194"
section_name: "Ivermectin meal."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "E"
subchapter_name: "ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS"
part_number: "520"
part_name: "ORAL DOSAGE FORM NEW ANIMAL DRUGS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 360b."
regulatory_source: "40 FR 13838, Mar. 27, 1975, unless otherwise noted."
cfr_part: "520"
---


# 520.1194 Ivermectin meal.

(a) *Specifications.* Each gram of meal contains 6 milligrams ivermectin (0.6 percent).

(b) *Sponsor.* See No. 017135 in § 510.600(c) of this chapter.

(c) *Special considerations.* See § 500.25 of this chapter.

(d) *Conditions of use in horses*—(1) *Amount.* Administer 136 micrograms (mcg) ivermectin per pound (/lb) body weight (300 mcg/kilogram) as a single dose on approximately 2 lb grain or sweet feed.

(2) *Indications for use.* For treatment and control of Large Strongyles (adults): *Strongylus vulgaris* (also early forms in blood vessels), *S.* *edentatus* (also tissue stages), *S.* *equinus*, *Triodontophorus* spp. Including *T.* *brevicauda* and *T.* *serratus*, and *Craterostomum acuticaudatum*; Small Strongyles (adults, including those resistant to some benzimidazole class compounds): *Coronocyclus* spp. Including *C.* *coronatus*, *C.* *labiatus*, and *C.* *labratus*, *Cyathostomum* spp. Including *C.* *catinatum* and *C.* *pateratum*, *Cylicocyclus* spp. Including *C.* *insigne*, *C.* *leptostomum*, *C.* *nassatus*, and *C.* *brevicapsulatus*, *Cylicodontophorus* spp., *Cylicostephanus* spp. Including *C.* *calicatus*, *C.* *goldi*, *C.* *longibursatus*, and *C.* *minutus*, and *Petrovinema poculatum*; Small Strongyles (fourth-stage larvae); Pinworms (adults and fourth stage larvae): *Oxyuris equi*; Ascarids (adults and third- and fourth-stage larvae): *Parascaris equorum*; Hairworms (adults): *Trichostrongylus axei*; Large Mouth Stomach Worms (adults): *Habronema muscae*; Bots (oral and gastric stages): G*asterophilus* spp. Including *G.* *intestinalis* and *G.* *nasalis*; Lungworms (adults and fourth-stage larvae): *Dictyocaulus arnfieldi*; Intestinal Threadworms (adults): *Strongyloides westeri*; Summer Sores caused by *Habronema* and *Draschia* spp. Cutaneous third-stage larvae; Dermatitis caused by neck threadworm microfilariae, *Onchocerca* sp.

*Limitations.* Do not use in horses intended for human consumption.

[70 FR 1817, Jan. 11, 2005, as amended at 70 FR 19262, Apr. 13, 2005]