Code of Federal Regulations (Last Updated: July 5, 2024) |
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 522 - Implantation or Injectable Dosage Form New Animal Drugs |
§ 522.1940 - Progesterone and estradiol benzoate.
-
§ 522.1940 Progesterone and estradiol benzoate.
(a) Specifications —
(1) Each implant consists of progesterone and estradiol benzoate. (i) 100 mg progesterone and 10 mg estradiol benzoate (one implant consisting of four pellets, each containing 25 mg progesterone and 2.5 mg estradiol benzoate).
(ii) 200 mg progesterone and 20 mg estradiol benzoate (one implant consisting of eight pellets, each containing 25 mg progesterone and 2.5 mg estradiol benzoate).
(2) Each implant consists of progesterone and estradiol benzoate and tylosin tartrate. (i) 100 mg progesterone, 10 mg estradiol benzoate, and 29 mg tylosin tartrate (one implant consisting of four pellets, each containing 25 mg progesterone and 2.5 mg estradiol benzoate, and one pellet containing 29 mg tylosin tartrate).
(ii) 200 mg progesterone, 20 mg estradiol benzoate, and 29 mg tylosin tartrate (one implant consisting of eight pellets, each containing 25 mg progesterone and 2.5 mg estradiol benzoate, and one pellet containing 29 mg tylosin tartrate).
d(b) Sponsors. See sponsors in § 510.600(c) of this chapter for use as in paragraph (
.c) of this section
dd and (iii):
(1) No. 054771 for use as in paragraphs (
dd2(ii), (
iii, and d3, and (
d and (2)ii) of this section.
(2) No. 058198 for use as in paragraphs (
(i)(A), (e)(1)(i)(B), (e)(1)(ii), and (e)(3) of this section.
b(
c) Related tolerances. See §§ 556.240 and 556.540 of this chapter.
c(
dd) Special considerations. Labeling of implants described in paragraphs (
anda)(2)(i) and (a)(2)(ii) for use in paragraphs (e)(1)(i)(B)
d2B), (
.e)(3)(ii) of this section shall bear the following: “Federal law restricts this drug to use by or on the order of a licensed veterinarian.”
d(
in cattle. It is used for implantation as follows:e)Conditions of use
Suckling beef—
(1)
at leastBeef calves
old45 days
lb of body weightof age and older and weighing up to 400
Amountlbs —
(i)
milligrams (Amounts and indications for use.
(A) An implant containing 100
)mg
(one implant consisting of 4 pellets, each pellet containing 25 mg progesterone and 2.5 mg estradiol benzoate) per implant dose.progesterone and 10 mg estradiol benzoate
(ii) Indications for use. For(B) 100 mg progesterone and 10 mg estradiol benzoate (one implant consisting of 5 pellets, each of 4 pellets containing 25 mg progesterone and 2.5 mg estradiol benzoate, and 1 pellet containing 29 mg tylosin tartrate) per implant dose.
iiias described in paragraph (a)(1)(i) of this section for increased rate of weight gain.
(B) An implant containing 100 mg progesterone, 10 mg estradiol benzoate, and 29 mg tylosin tartrate as described in paragraph (a)(2)(i) of this section for increased rate of weight gain.
(
For subcutaneous ear implantation, one dose per animal.ii)Limitations.
establishedImplant pellets subcutaneously in ear only. Other than when used as described in (e)(2)(i)(B) of this section, the implant as described in paragraph (a)(1)(i) of this section is not approved for repeated implantation (reimplantation). The implant as described in paragraph (a)(2)(i) of this section is not approved for repeated implantation (reimplantation) with this or any other cattle ear implant. Do not use in beef calves less than 45 days of age, dairy calves, and veal calves because effectiveness and safety have not been
, or in dairy cows. A withdrawal period has not been established for this product in preruminating calves. Do not use in calves to be processed for vealevaluated. Do not use in dairy cows or in animals intended for subsequent breeding
weighing 400 lb or more. Use in these cattle may cause drug residues in milk and/or calves born to these cows.
(2) Growing beef steers
Amountfed in confinement for slaughter —
(i)
(one implant consisting of 8 pellets, each pellet containing 25 mg progesterone and 2.5 mg estradiol benzoate) per implant dose.(B)Amounts and indications for use.
(A) An implant containing 200 mg progesterone and 20 mg estradiol benzoate
(one implant consisting of 9 pellets, each of 8 pellets containing 25 mg progesterone and 2.5 mg estradiol benzoate, and 1 pellet containing 29 mg tylosin tartrate) per implant dose.as described in paragraph (a)(1)(ii) of this section for increased rate of weight gain and improved feed efficiency.
(B) An implant containing 200 mg progesterone and 20 mg estradiol benzoate
(iii) Limitations. For subcutaneous ear implantation, one dose per animal(ii) Indications for use. For increased rate of weight gain and improved feed efficiency.
45 daysas described in paragraph (a)(1)(ii) of this section for increased rate of weight gain in a reimplantation program where an implant as described in paragraph (a)(1)(i) of this section is the first implant and an implant as described in paragraph (a)(1)(ii) of this section is administered approximately 70 days later.
(C) An implant containing 200 mg progesterone and 20 mg estradiol benzoate as described in paragraph (a)(1)(ii) of this section for increased rate of weight gain in a reimplantation program where an implant as described in paragraph (a)(1)(ii) of this section is the first implant and an implant as described in paragraph (a)(1)(ii) of this section is administered approximately 70 days later.
(ii) Limitations. Implant pellets subcutaneously in ear only. Other than when used as described in paragraphs (e)(2)(i)(B) or (C) of this section, the implant described in paragraph (a)(1)(ii) of this section is not approved for repeated implantation (reimplantation) with any other cattle ear implant in growing beef steers and heifers fed in confinement for slaughter as safety and effectiveness have not been evaluated. Do not use in beef calves less than
established2 months of age, dairy calves, and veal calves because effectiveness and safety have not been
, or in dairy cows. A withdrawal period has not been established for this product in preruminating calves. Do not use in calves to be processed for veal.evaluated. Do not use in dairy cows or in animals intended for subsequent breeding
[69 FR 70055, Dec. 2, 2004, as amended at 77 FR 31723, May 30, 2012; 79 FR 16194, Mar. 25, 2014; 81 FR 48702, July 26, 2016; 87 FR 17946, Mar. 29, 2022; 88 FR 55566, Aug. 16, 2023(3) Steers fed in confinement for slaughter —
(i) Amount. Reimplant 200 mg progesterone and 20 mg estradiol benzoate on approximately day 70 following an initial implant of 100 mg progesterone and 10 mg estradiol benzoate or 200 mg progesterone and 20 mg estradiol benzoate.
(ii) Indications for use. For additional improvement in rate of weight gain.
(iii) Limitations. For subcutaneous ear implantation. Safety and effectiveness have not been established in veal calves. A withdrawal period has not been established for this product in preruminating calves. Do not use in calves to be processed for veal.
. Use in these cattle may cause drug residues in milk and/or calves born to these cows.
(3) Growing beef steers weighing 400 lbs or more —
(i) Amounts and indications for use. An implant containing 200 mg progesterone, 20 mg estradiol benzoate, and 29 mg tylosin tartrate as described in paragraph (a)(2)(ii) of this section for increased rate of weight gain and improved feed efficiency.
(ii) Limitations. The implant as described in paragraph (a)(2)(ii) of this section is not approved for repeated implantation (reimplantation) with this or any other cattle ear implant. Do not use in beef calves less than 2 months of age, dairy calves, and veal calves because effectiveness and safety have not been evaluated. Do not use in dairy cows or in animals intended for subsequent breeding. Use in these cattle may cause drug residues in milk and/or calves born to these cows.
[89 FR 42358, May 15, 2024]