Section 522.390 - Chloramphenicol(a)Specifications. Each milliliter of solution contains 100 milligrams of chloramphenicol.(b)Sponsor. See Nos. 054771 and 069043 in § 510.600(c) of this chapter.(c)Conditions of use.Dogs - (1)Amount. 5 to 15 milligrams per pound of body weight, intramuscularly or intravenously, every 6 hours. In severe infections, use 4 to 6 hour treatment intervals the first day. If no response is obtained in 3 to 5 days, discontinue use and reevaluate diagnosis.(2)Indications for use. Treatment of infections of the respiratory tract, the urinary tract, and enteritis and tonsillitis caused by organisms susceptible to chloramphenicol.(3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian. Federal law prohibits the extralabel use of this drug in food-producing animals.57 FR 37331, Aug. 18, 1992, as amended at 65 FR 45877 , July 26, 2000; 78 FR 17597 , Mar. 22, 2013; 79 FR 16185 , Mar. 25, 2014; 81 FR 17608 , Mar. 30, 2016