# Ivermectin paste.
**AGENCY:**
Food and Drug Administration, HHS.
**ACTION:**
Final rule.
**SUMMARY:**
The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of a supplemental abbreviated new animal drug application (ANADA) filed by IVX Animal Health, Inc. The supplemental ANADA provides for use of ivermectin oral paste for the treatment and control of additional species of gastrointestinal parasites in horses.
**DATES:**
This rule is effective February 10, 2009.
**FOR FURTHER INFORMATION CONTACT:**
John K. Harshman, Center for Veterinary Medicine (HFV 104), Food and Drug Administration, 7500 Standish Pl., Rockville, MD 20855, 240-276-8197, e-mail: *[email protected]* .
**SUPPLEMENTARY INFORMATION:**
IVX Animal Health, Inc., 3915 South 48th Street Ter., St. Joseph, MO 64503, filed a supplement to ANADA 200-286 that provides for oral use of PHOENECTIN (ivermectin) Paste 1.87 percent for the treatment and control of additional species of gastrointestinal parasites in horses. The supplemental ANADA is approved as of December 18, 2008, and the regulations are amended in 21 CFR 520.1192 to reflect the approval.
In accordance with the freedom of information provisions of 21 CFR part 20 and 21 CFR 514.11(e)(2)(ii), a summary of safety and effectiveness data and information submitted to support approval of this application may be seen in the Division of Dockets Management (HFA-305), Food and Drug Administration, 5630 Fishers Lane, rm. 1061, Rockville, MD 20852, between 9 a.m. and 4 p.m., Monday through Friday.
The agency has determined under 21 CFR 25.33(a)(1) that this action is of a type that does not individually or cumulatively have a significant effect on the human environment. Therefore, neither an environmental assessment nor an environmental impact statement is required.
This rule does not meet the definition of “rule” in 5 U.S.C. 804(3)(A) because it is a rule of “particular applicability.” Therefore, it is not subject to the congressional review requirements in 5 U.S.C. 801-808.
**List of Subject in 21 CFR Part 520**
Animal drugs.
**21 CFR Part 520**
Therefore, under the Federal Food, Drug, and Cosmetic Act and under authority delegated to the Commissioner of Food and Drugs and redelegated to the Center for Veterinary Medicine, 21 CFR part 520 is amended as follows:
**21 CFR Part 520**
**PART 520—ORAL DOSAGE FORM NEW ANIMAL DRUGS**
1. The authority citation for 21 CFR part 520 continues to read as follows:
**Authority:**
21 U.S.C. 360b.
**21 CFR Part 520**
2. In § 520.1192, remove paragraphs (b)(3), (e)(1)(ii)(A), and (e)(1)(ii)(B); and revise paragraphs (b)(1), (b)(2), and (e)(1)(ii) to read as follows:
§ 520.1192
(b) * * *
(1) No. 050604 for use of a 1.87 percent paste as in (e)(1) of this section and a 0.153 percent paste for use as in paragraph (e)(2) of this section.
(2) Nos. 051311, 054925, 059130, and 061623 for use of a 1.87 percent paste for use as in paragraph (e)(1) of this section.
(e) * * *
(1) * * *
(ii) *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): *Gasterophilus* 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.
Dated: February 3, 2009.
Steven D. Vaughn,
Director, Office of New Animal Drug Evaluation, Center for Veterinary Medicine.