Naltrexone.

(a) Specifications. Each milliliter of solution contains 50 milligrams of naltrexone hydrochloride. (b) Sponsor. See 053923 in § 510.600(c) of this chapter. (c) Conditions of use in elk and moose —(1) Amount. 100 milligrams of naltrexone hydrochloride for each milligram of carfentanil citrate administered. One-quarter of the dose should be administered intravenously and three-quarters of the dose should be administered subcutaneously. (2) Indications for use. As an antagonist to carfentanil citrate immobilization in free-ranging or confined elk and moose ( Cervidae ). (3) Limitations. Do not use in domestic food-producing animals. Do not use in free-ranging animals for 45 days before or during hunting season. Federal law restricts this drug to use by or on the order of a licensed veterinarian. [62 FR 5320, Feb. 5, 1997, as amended at 79 FR 16191, Mar. 25, 2014]