Section 522.2444a - Thiopental powder for injection(a)Specifications. The drug contains sodium thiopental powder for constitution with sterile water for injection.(b)Sponsor. See No. 054771 in § 510.600(c) of this chapter.(c)Conditions of use in dogs and cats - (1)Amount. Administer by intravenous injection as follows: (i) 6 to 9 milligrams (mg) per pound of body weight for brief anesthesia (6 to 10 minutes).(ii) 10 to 12 mg per pound of body weight for anesthesia of 15 to 25 minutes duration.(2)Indications for use. It is used as an anesthetic for intravenous administration to dogs and cats during short to moderately long surgical and other procedures. It is also used to induce anesthesia in dogs and cats which then have surgical anesthesia maintained by use of a volatile anesthetic.(3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian. 79 FR 16196 , Mar. 25, 2014