Section 522.380 - Chloral hydrate, pentobarbital, and magnesium sulfate(a)Specifications. Each milliliter of solution contains 42.5 milligrams (mg) of chloral hydrate, 8.86 mg of pentobarbital, and 21.2 mg of magnesium sulfate.(b)Sponsor. See No. 054771 in § 510.600(c) of this chapter.(c)Conditions of use -(1)Amount. For general anesthesia: Administer 20 to 50 milliliters per 100 pounds of body weight by intravenous injection until the desired effect is produced. Cattle usually require a lower dosage on the basis of body weight. As a sedative-relaxant: Administer at a level of one-fourth to one-half of the anesthetic dosage level.(2)Indications for use. For general anesthesia and as a sedative-relaxant in cattle and horses.(3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian. 79 FR 16185 , Mar. 25, 2014