21 CFR § 520.1660cChapter I

§ 520.1660c Oxytetracycline tablets.

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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) Each tablet contains 250 or 500 milligrams (mg) oxytetracycline hydrochloride.

Sponsor.(b) See No. 054771 in § 510.600(c) of this chapter.

Tolerances.(c) See § 556.500 of this chapter.

Conditions of use in beef and dairy cattleAmounts.(d) —(1) 10 mg per pound of body weight every 12 hours for treatment; 5 mg per pound of body weight every 12 hours for control.

Indications for use.Salmonella typhimuriumEscherichia coliPasteurella multocida.(2) For treatment and control of bacterial enteritis caused by and (colibacillosis) and bacterial pneumonia (shipping fever complex, pasteurellosis) caused by

Limitations.(3) Discontinue treatment 7 days prior to slaughter. Not for use in lactating dairy cattle. A withdrawal period has not been established for this product in preruminating calves. Do not use in calves to be processed for veal. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

[46 FR 32440, June 23, 1981, as amended at 50 FR 1045, Jan. 9, 1985; 63 FR 70334, Dec. 21, 1998; 70 FR 16394, Apr. 4, 2005; 78 FR 28825, May 20, 2014; 88 FR 14897, Mar. 10, 2023; 88 FR 55563, Aug. 16, 2023]

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.