---
kind: "section"
citation: "21 C.F.R. § 520.1265"
title: "21"
number: "520.1265"
heading: "Lincomycin and spectinomycin powder."
url: "https://uscodex.org/cfr/21/520.1265"
---

# §520.1265. Lincomycin and spectinomycin powder.

- (a) **Specifications.** The following salts of lincomycin and spectinomycin are present in a soluble powder in the ratio of 1 to 2 on the basis of equivalency of lincomycin base to equivalency of spectinomycin base:
  - (1) **Lincomycin hydrochloride monohydrate and spectinomycin sulfate tetrahydrate.**
  - (2) **Lincomycin hydrochloride monohydrate and spectinomycin dihydrochloride pentahydrate.**
- (b) **Sponsors.** See sponsors in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter for use as in [paragraph (d)](#d) of this section.
  - (1) **No.** 054771 for use of product described in [paragraph (a)(1)](#a-1) of this section.
  - (2) **Nos.** 016592, 061133, and 066104 for use of product described in [paragraph (a)(2)](#a-2) of this section.
- (c) **Tolerances.** See §§ [556.360](/cfr/21/556.360.md) and [556.600](/cfr/21/556.600.md) of this chapter.
- (d) **Conditions of use in chickens—**
  - (1) **Amount.** 2 grams of antibiotic activity per gallon of drinking water; administer as the sole source of water for the first 5 to 7 days of life.
  - (2) **Indications for use.** As an aid in the control of airsacculitis caused by either Mycoplasma synoviae or M. gallisepticum susceptible to lincomycin-spectinomycin and complicated chronic respiratory disease (air sac infection) caused by Escherichia coli and M. gallisepticum susceptible to lincomycin-spectinomycin.
  - (3) **Limitations.** Federal law restricts this drug to use by or on the order of a licensed veterinarian.

## Notes

### Amendments

[69 FR 13220, Mar. 22, 2004, as amended at 70 FR 40881, July 15, 2005; 71 FR 71038, Dec. 8, 2006; 77 FR 56770, Sept. 14, 2012; 78 FR 28823, May 20, 2014; 81 FR 94989, Dec. 27, 2016; 83 FR 48945, Sept. 28, 2018; 84 FR 8972, Mar. 13, 2019]

### Authority

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

### Source

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

### Amendments

[69 FR 13220, Mar. 22, 2004, as amended at 70 FR 40881, July 15, 2005; 71 FR 71038, Dec. 8, 2006; 77 FR 56770, Sept. 14, 2012; 78 FR 28823, May 20, 2014; 81 FR 94989, Dec. 27, 2016; 83 FR 48945, Sept. 28, 2018; 84 FR 8972, Mar. 13, 2019]