Food and Drug Administration, HHS § 522.2444b

rapidly and completely. The drug is quire bioequivalency and safety infor- used at the following dosage levels: mation.

Dosage in [40 FR 25812, June 19, 1975, as amended at 49 Weight of animal FR 8434, Mar. 7, 1984; 53 FR 23390, June 22, Species in pounds milligrams per pound 1988; 53 FR 40728, Oct. 18, 1988; 62 FR 35076, June 30, 1997] Dog ...... Over 50 ...... 14.1 Do ...... 30–50 ...... 18.8 § 522.2444 Sodium thiopental implan- Do ...... 10–30 ...... 23.5 Do ...... Under 10 ...... 28.2 tation or injectable dosage forms. Cat ...... 31.3–37.6 Horse ...... 6.3–7.8 § 522.2444a Sodium thiopental for in- Cattle and swine ...... 6.7–9.4 jection. Calves and sheep ...... 9.4–11.8 (a) Specifications. The drug contains sodium thiopental sterile powder for (3) Federal law restricts this drug to dilution with sterile water for injec- use by or on the order of a licensed vet- tion. erinarian. (b) Sponsor. See No. 000856 in § 510.600(c) of this chapter. § 522.2424 Sodium thiamylal for injec- (c) Conditions of use. (1) It is used as tion. an anesthetic for intravenous adminis- (a) Specifications. The drug is a sterile tration to dogs and cats during short to dry powder. It is reconstituted moderately long surgical and other aseptically with sterile distilled water, procedures. It is also used to induce an- water for injection, or sodium chloride esthesia in dogs and cats which then injection, to a desired concentration of have surgical anesthesia maintained by 0.5 to 4 percent sodium thiamylal. use of a volatile anesthetic. (b) Sponsors. See code Nos. 000010 and (2) It is administered as follows: 000856 in § 510.500(c) of this chapter. (i) For brief anesthesia (6 to 10 min- (c) Conditions of use. (1) It is used as utes) a dosage of 6 to 9 milligrams per an ultra-short-acting anesthetic in pound of body weight is suggested. dogs, cats, swine, horses, and cattle. (ii) To obtain anesthesia of 15 to 25 (2) When diluted aseptically to the minutes duration the suggested dosage desired concentration and adminis- is 10 to 12 milligrams per pound of body tered intravenously to effect, the aver- weight. age single dose is: (iii) Use of a preanesthetic tranquil- (i) Dogs and cats: 8 milligrams per izer or morphine will decrease the dos- pound of body weight (when used with age of sodium thiopental required, pro- a preanesthetic, generally one-half the vide for smoother induction and normal dose). smoother recovery, and sometimes pro- long the recovery period. If morphine is (ii) Swine: 40 milligrams per 5 pounds used as a preanesthetic agent the dose of body weight. of the barbiturate can be reduced as (iii) Horses: Light anesthesia, 1 gram much as 40 to 50 percent. When a tran- per 500 pounds to 1,100 pounds of body quilizer is administered the barbitu- weight; deep anethesia, 1 gram per 300 rate dosage can be reduced 10 to 25 per- pounds of body weight (40 milligrams cent. per 12 pounds of body weight). (3) Federal law restricts this drug to (iv) Cattle: Short duration, 20 milli- use by or on the order of a licensed vet- grams per 5 pounds of body weight; erinarian. longer duration, 40 milligrams per 7 pounds of body weight. § 522.2444b Sodium thiopental, sodium (3) Federal law restricts this drug to pentobarbital for injection. use by or on the order of a licensed vet- (a) Specifications. Each gram of the erinarian. drug contains 750 milligrams of sodium (4) NAS/NRC status: The conditions thiopental and 250 milligrams of so- of use specified in this paragraph are dium pentobarbital sterile powder for NAS/NRC reviewed and found effective. dilution with sterile water for injec- Applications for these uses need not in- tion. clude effectiveness data as specified in (b) Sponsor. See No. 061623 in § 514.111 of this chapter, but may re- § 510.600(c) of this chapter.

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(c) Conditions of use. (1) It is used as The maximum total safe dose is 13.6 an anesthetic for intravenous adminis- milligrams per pound of body weight. tration to dogs and cats during short to (ii) In healthy cats: An initial moderately long surgical procedures. intramuscular dosage of 4.4 to 5.4 milli- (2) It is administered as follows: grams per pound of body weight is rec- (i) For total anesthesia, it is given at ommended for such procedures as den- approximately 10 to 12 milligrams per tistry, treatment of abscesses, foreign pound of body weight over a period of body removal, and related types of sur- 3.5 to 5 minutes. gery; 4.8 to 5.7 milligrams per pound of (ii) When preanesthetic medication is body weight for minor procedures re- used, it is important to wait at least an quiring mild to moderate analgesia, hour before administering thiopental and sodium pentobarbital for injection, such as repair of lacerations, castra- and the dosage necessary for anes- tions, and other procedures of short du- ration. Initial dosages of 6.5 to 7.2 mil- thesia is reduced. Usually 1⁄2 to 2⁄3 the normal amount is adequate. ligrams per pound of body weight are (3) Federal law restricts this drug to recommended for ovariohysterectomy use by or on the order of a licensed vet- and onychectomy. When supplemental erinarian. doses are required, such individual sup- plemental doses should be given in in- [40 FR 13858, Mar. 27, 1975, as amended at 47 FR 14149, Apr. 2, 1982; 66 FR 14073, Mar. 9, crements that are less than the initial 2001; 68 FR 4915, Jan. 31, 2003] dose and the total dose given (initial dose plus supplemental doses) should § 522.2470 Tiletamine hydrochloride not exceed the maximum allowable and zolazepam hydrochloride for safe dose of 32.7 milligrams per pound injection. of body weight. (a) Specifications. Tiletamine hydro- (3) Limitations. Discard unused recon- chloride and zolazepam hydrochloride stituted solution after 48 hours. Not for for injection when reconstituted with use in dogs and cats with pancreatic sterile distilled water provides disease, or with severe cardiac or pul- tiletamine hydrochloride and monary dysfunction. Not for use in zolazepam hydrochloride equivalent to pregnant animals. Not for use in cats 50 milligrams of tiletamine base and 50 suffering with renal insufficiency. The milligrams of zolazepam base per milli- dosage should be reduced in geriatric liter of solution. dogs and cats. Federal law restricts (b) Sponsor. See No. 000856 in § 510.600(c) of this chapter. this drug to use by or on the order of a (c) Conditions of use—(1) Indications licensed veterinarian. for use. It is used for restraint or for [47 FR 15328, Apr. 9, 1982, as amended at 51 anesthesia combined with muscle re- FR 24142, July 2, 1986; 67 FR 67521, Nov. 6, laxation in cats and in dogs for re- 2002] straint and minor procedures of short duration (30 minutes) requiring mild to § 522.2471 Tilmicosin. moderate analgesia. (a) Specifications. Each milliliter of (2) Amount. Expressed as milligrams solution contains 300 milligrams (mg) of the drug combination: tilmicosin base as tilmicosin phos- (i) In healthy dogs: An initial phate. intramuscular dosage of 3 to 4.5 milli- (b) Sponsor. See No. 000986 in grams per pound of body weight for di- § 510.600(c) of this chapter. agnostic purposes; 4.5 to 6 milligrams per pound of body weight for minor (c) Related tolerances. See § 556.735 of procedures of short duration such as this chapter. repair of lacerations and wounds, cas- (d) Special considerations. (1) Not for trations, and other procedures requir- human use. Use of this antibiotic in ing mild to moderate analgesia. Sup- humans may prove fatal. Do not use in plemental doses when required should automatically powered syringes. be less than the initial dose and the (2) Federal law restricts this drug to total dose given should not exceed 12 use by or on the order of a licensed vet- milligrams per pound of body weight. erinarian.

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