21 CFR 522.840 - Estradiol.

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There are 3 Updates appearing in the Federal Register for 21 CFR 522. View below or at eCFR (GPOAccess)
§ 522.840 Estradiol.
(a) Specifications. Each silicone rubber implant contains 25.7 or 43.9 milligrams (mg) estradiol and is coated with not less than 0.5 mg oxytetracycline powder.
(b) Sponsor. See No. 000986 in § 510.600(c) of this chapter.
(c) Related tolerances. See § 556.240 of this chapter.
(d) Conditions of use. For implantation in steers and heifers as follows:
(1) Amount. Insert one 25.7-mg implant every 200 days; insert one 43.9-mg implant every 400 days.
(2) Indications for use. For increased rate of weight gain in suckling and pastured growing steers; for improved feed efficiency and increased rate of weight gain in confined steers and heifers. No additional effectiveness may be expected from reimplanting in less than 200 days for the 25.7-mg implant or 400 days for the 43.9-mg implant.
(3) Limitations. For subcutaneous ear implantation in steers and heifers only. 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.
[69 FR 67818, Nov. 22, 2004, as amended at 77 FR 31723, May 30, 2012]

Title 21 published on 2014-04-01

The following are only the Rules published in the Federal Register after the published date of Title 21.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-07-31; vol. 79 # 147 - Thursday, July 31, 2014
    1. 79 FR 44277 - New Animal Drugs; Bacitracin Methylene Disalicylate; Dinoprost Solution; Gonadorelin Hydrochloride; Progesterone Intravaginal Inserts; Salinomycin; Ractopamine; Tylosin
      GPO FDSys XML | Text
      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration
      Final rule; technical amendment.
      This rule is effective July 31, 2014.
      21 CFR Parts 520, 522, 529, and 558

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United States Code
U.S. Code: Title 21 - FOOD AND DRUGS

Title 21 published on 2014-04-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 21 CFR 522 after this date.

  • 2014-07-31; vol. 79 # 147 - Thursday, July 31, 2014
    1. 79 FR 44277 - New Animal Drugs; Bacitracin Methylene Disalicylate; Dinoprost Solution; Gonadorelin Hydrochloride; Progesterone Intravaginal Inserts; Salinomycin; Ractopamine; Tylosin
      GPO FDSys XML | Text
      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration
      Final rule; technical amendment.
      This rule is effective July 31, 2014.
      21 CFR Parts 520, 522, 529, and 558