21 CFR 520.90c - Ampicillin boluses.

Regulations last checked for updates: Nov 22, 2024

Title 21 - Food and Drugs last revised: Nov 19, 2024

View all text of Part 520 [§ 520.23 - § 520.2654]

§ 520.90c - Ampicillin boluses.

(a) Specifications. Each bolus contains ampicillin trihydrate equivalent to 400 milligrams of ampicillin.

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

(d) Conditions of use in nonruminating calves—(1) Amount. 5 milligrams per pound of body weight twice daily not to exceed 4 days.

(2) Indications for use. Oral treatment of bacterial enteritis (colibacillosis) caused by E. coli.

(3) Limitations. Treated calves must not be slaughtered for food during treatment and for 7 days after the last treatment. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

[57 FR 37322, Aug. 18, 1992, as amended at 58 FR 61016, Nov. 19, 1993; 60 FR 55659, Nov. 2, 1995; 79 FR 28818, May 20, 2014. Redesignated and amended at 85 FR 18118, Apr. 1, 2020]

authority: 21 U.S.C. 360b.

source: 40 FR 13838, Mar. 27, 1975, unless otherwise noted.

cite as: 21 CFR 520.90c