21 CFR § 529.1186Chapter I

§ 529.1186 Isoflurane.

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Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.

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Specifications.(a) The drug is a clear, colorless, stable liquid.

Sponsors.(b) See Nos. 017033, 054771, and 065085 in § 510.600(c) of this chapter.

Conditions of use.(c) Administer by inhalation:

AmountHorses:(1) —(i) For induction of surgical anesthesia: 3 to 5 percent isoflurane (with oxygen) for 5 to 10 minutes. For maintenance of surgical anesthesia: 1.5 to 1.8 percent isoflurane (with oxygen).

Dogs:(ii) For induction of surgical anesthesia: 2 to 2.5 percent isoflurane (with oxygen) for 5 to 10 minutes. For maintenance of surgical anesthesia: 1.5 to 1.8 percent isoflurane (with oxygen).

Indications for use.(2) For induction and maintenance of general anesthesia in horses and dogs.

Limitations.(3) Do not use in horses intended for human consumption. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

[51 FR 594, Jan. 7, 1986, as amended at 54 FR 23472, June 1, 1989; 58 FR 17346, Apr. 2, 1993; 59 FR 44315, Aug. 29, 1994; 60 FR 40456, Aug. 9, 1995; 63 FR 8122, Feb. 18, 1998; 63 FR 24106, May 1, 1998; 66 FR 17510, Apr. 2, 2001; 71 FR 43967, Aug. 3, 2006; 74 FR 68530, Dec. 28, 2009; 76 FR 16533, Mar. 24, 2011; 78 FR 14669, Mar. 7, 2013; 78 FR 17868, Mar. 25, 2013; 80 FR 18776, Apr. 8, 2015; 87 FR 58963, Sept. 29, 2022; 89 FR 14411, Feb. 27, 2024; 89 FR 42360, May 15, 2024]

eCFR data current as of: June 10, 2026

This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.