# Florfenicol.
**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 actions for new animal drug applications (NADAs) and abbreviated new animal drug applications (ANADAs) during April 2012. FDA is also informing the public of the availability of summaries of the basis of approval and of environmental review documents, where applicable.
**DATES:**
This rule is effective May 31, 2012.
**FOR FURTHER INFORMATION CONTACT:**
George K. Haibel, Center for Veterinary Medicine (HFV-6), Food and Drug Administration, 7519 Standish Pl., Rockville, MD 20855, 240-276-9019, *[email protected].*
**SUPPLEMENTARY INFORMATION:**
FDA's Center for Veterinary Medicine (CVM) is adopting use of a monthly *Federal Register* document to codify approval actions for new animal drug applications (NADAs) and abbreviated new animal drug applications (ANADAs). CVM will no longer publish a separate rule for each action. This approach will allow a more efficient use of available resources.
In this document, FDA is amending the animal drug regulations to reflect the original and supplemental approval actions during April 2012, as listed in table 1 of this document. FDA is also informing the public of the availability, where applicable, of environmental review documents required under the National Environmental Policy Act (NEPA) and, for actions requiring review of safety or effectiveness data, summaries of the basis of approval (FOI Summaries) under the Freedom of Information Act (FOIA). These public documents 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. Persons with access to the Internet may obtain these documents at the CVM FOIA Electronic Reading Room: *http://www.fda.gov/AboutFDA/CentersOffices/OfficeofFoods/CVM/CVMFOIAElectronicReadingRoom/default.htm.*
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.
| NADA/ANADA | Sponsor | New animal drug | Action | 21 CFR Section | FOIA | NEPA |
| --- | --- | --- | --- | --- | --- | --- |
| 141-246 | Intervet, Inc., 556 Morris Ave., Summit, NJ 07901 | AQUAFLOR (florfenicol) Type A medicated article | Supplemental approval to: (1) Increase the permitted concentrations in Type C feeds; (2) add an indication for the control of mortality due to columnaris disease associated with
(3) add an indication for the control of mortality due to streptococcal septicemia associated with
in freshwater-reared warmwater finfish; and (4) increase the withdrawal period to 15 days. This approval renders § 516.1215 obsolete | 516.1215, 558.261 | yes | EA/FONSI. |
| 200-456 | Med-Pharmex, Inc., 2727 Thompson Creek Rd., Pomona, CA 91767-1861 | Dexamethasone Injectable Solution | Original approval of a generic copy of NADA 012-559 | 522.540 | yes | CE. |
| 200-481 | Ceva Sante Animale, 10 Avenue de la Ballastière, 33500 Libourne, France | ALTRESYN (altrenogest) Solution 0.22% | Original approval of a generic copy of NADA 131-310 | 520.48 | yes | CE. |
**List of Subjects**
Administrative practice and procedure, Animal drugs, Labeling, Reporting and recordkeeping requirements.
Administrative practice and procedure, Animal drugs, Confidential business information, Reporting and recordkeeping requirements.
Animal drugs.
Animal drugs, Animal feeds.
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 parts 510, 516, 520, 522, and 558 are amended as follows:
**21 CFR Part 510**
**PART 510—NEW ANIMAL DRUGS**
1. The authority citation for 21 CFR part 510 continues to read as follows:
**Authority:**
21 U.S.C. 321, 331, 351, 352, 353, 360b, 371, 379e.
**21 CFR Part 510**
2. In § 510.600, in the table in paragraph (c)(1), alphabetically add an entry for “Ceva Sante Animale”; and in the table in paragraph (c)(2), numerically add an entry for “013744” to read as follows:
§ 510.600
(c) * * *
(1) * * *
| Firm name and address | Drug labeler code |
| --- | --- |
| | |
| * * * * * | |
| Ceva Sante Animale, 10 Avenue de la Ballastière, 33500 Libourne, France | 013744 |
| | |
| * * * * * | |
(2) * * *
| Drug labeler code | Firm name and address |
| --- | --- |
| | |
| * * * * * | |
| 013744 | Ceva Sante Animale, 10 Avenue de la Ballastière, 33500 Libourne, France. |
| | |
| * * * * * | |
**21 CFR Part 516**
**PART 516—NEW ANIMAL DRUGS FOR MINOR USE AND MINOR SPECIES**
3. The authority citation for 21 CFR part 516 continues to read as follows:
**Authority:**
21 U.S.C. 360ccc-1, 360ccc-2, 371.
**21 CFR Part 516**
§ 516.1215
4. Remove § 516.1215.
**21 CFR Part 520**
**PART 520—ORAL DOSAGE FORM NEW ANIMAL DRUGS**
**21 CFR Part 516**
5. The authority citation for 21 CFR part 520 continues to read as follows:
**Authority:**
21 U.S.C. 360b.
6. In § 520.48, revise paragraph (b) to read as follows:
§ 520.48
(b) *Sponsors.* See sponsor listings in § 510.600(c) of this chapter:
(1) No. 000061 for use as in paragraph (d) of this section.
(2) No. 013744 for use as in paragraph (d)(1) of this section.
**21 CFR Part 522**
**PART 522—IMPLANTATION OR INJECTABLE DOSAGE FORM NEW ANIMAL DRUGS**
7. The authority citation for 21 CFR part 522 continues to read as follows:
**Authority:**
21 U.S.C. 360b.
**21 CFR Part 516**
8. In § 522.540, revise the section heading and paragraphs (a)(2)(ii) and (a)(3)(iii) to read as follows:
§ 522.540
(a) * * *
(2) * * *
(ii) *Sponsors.* See Nos. 054925 and 058005 for use as in paragraphs (a)(3)(i)(C), (a)(3)(i)(D), (a)(3)(ii)(A), and (a)(3)(iii) of this section.
(3) * * *
(iii) Do not use in horses intended for human food. Federal law restricts this drug to use by or on the order of a licensed veterinarian.
**21 CFR Part 558**
**PART 558—NEW ANIMAL DRUGS FOR USE IN ANIMAL FEEDS**
9. The authority citation for 21 CFR part 558 continues to read as follows:
**Authority:**
21 U.S.C. 360b, 371.
**21 CFR Part 558**
10. In § 558.261, revise paragraphs (a)(2) and (c)(2)(i), and the table in paragraph (e)(2) to read as follows:
§ 558.261
(a) * * *
(2) 500 grams per kilogram for use as in paragraph (e)(2) of this section.
(c) * * *
(2) * * *
(i) For freshwater-reared finfish, must not exceed 15 days from the date of issuance.
(e) * * *
(2) * * *
| Florfenicol in grams/ton of feed | Indications for use | Limitations |
| --- | --- | --- |
| (i) 182 to 2,724 | Catfish: For the control of mortality due to enteric septicemia of catfish associated with | Feed as a sole ration for 10 consecutive days to deliver 10 to 15 milligrams (mg) florfenicol per kilogram (kg) of fish. Feed containing florfenicol shall not be fed for more than 10 days. Following administration, fish should be reevaluated by a licensed veterinarian before initiating a further course of therapy. A dose-related decrease in hematopoietic/lymphopoietic tissue may occur. The time required for hematopoietic/lymphopoietic tissues to regenerate was not evaluated. The effects of florfenicol on reproductive performance have not been determined. Feeds containing florfenicol must be withdrawn 15 days prior to slaughter. |
| (ii) 182 to 1,816 | Freshwater-reared salmonids: For the control of mortality due to coldwater disease associated with
and furunculosis associated with | Feed as a sole ration for 10 consecutive days to deliver 10 mg florfenicol per kg of fish. Feed containing florfenicol shall not be fed for more than 10 days. Following administration, fish should be reevaluated by a licensed veterinarian before initiating a further course of therapy. The effects of florfenicol on reproductive performance have not been determined. Feeds containing florfenicol must be withdrawn 15 days prior to slaughter. |
| (iii) 182 to 2,724 | Freshwater-reared finfish: For the control of mortality due to columnaris disease associated with | Feed as a sole ration for 10 consecutive days to deliver 10 to 15 mg florfenicol per kg of fish for freshwater-reared warmwater finfish and 10 mg florfenicol per kg of fish for other freshwater-reared finfish. Feed containing florfenicol shall not be fed for more than 10 days. Following administration, fish should be reevaluated by a licensed veterinarian before initiating a further course of therapy. For catfish, a dose-related decrease in hematopoietic/lymphopoietic tissue may occur. The time required for hematopoietic/lymphopoietic tissues to regenerate was not evaluated. The effects of florfenicol on reproductive performance have not been determined. Feeds containing florfenicol must be withdrawn 15 days prior to slaughter. |
| (iv) 273 to 2,724 | Freshwater-reared warmwater finfish: For the control of mortality due to streptococcal septicemia associated with | Feed as a sole ration for 10 consecutive days to deliver 15 mg florfenicol per kg of fish. Feed containing florfenicol shall not be fed for more than 10 days. Following administration, fish should be reevaluated by a licensed veterinarian before initiating a further course of therapy. For catfish, a dose-related decrease in hematopoietic/lymphopoietic tissue may occur. The time required for hematopoietic/lymphopoietic tissues to regenerate was not evaluated. The effects of florfenicol on reproductive performance have not been determined. Feeds containing florfenicol must be withdrawn 15 days prior to slaughter. |
Dated: May 24, 2012.
Bernadette Dunham,
Director, Center for Veterinary Medicine.