---
kind: "section"
citation: "21 C.F.R. § 522.2120"
title: "21"
number: "522.2120"
heading: "Spectinomycin hydrochloride."
url: "https://uscodex.org/cfr/21/522.2120"
---

# §522.2120. Spectinomycin hydrochloride.

- (a) **Specifications.** Each milliliter of solution contains 100 milligrams (mg) spectinomycin hydrochloride (as spectinomycin dihydrochloride pentahydrate).
- (b) **Sponsors.** See sponsors in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter:
  - (1) **Nos.** 016592 and 054771 for use as in [paragraph (d)(1)](#d-1) of this section; and
  - (2) **No.** 058198 for use as in [paragraph (d)(2)](#d-2) of this section.
- (c) **Related tolerances.** See [§ 556.600](/cfr/21/556.600.md) of this chapter.
- (d) **Conditions of use.** It is administered as follows:
  - (1) **Turkeys (1- to 3-day-old poults) and chickens (newly hatched chicks)—**
    - (i) **Amounts and indications for use.**
      - (A) Administer 5 mg per poult subcutaneously as an aid in the control of chronic respiratory disease (CRD) associated with Escherichia coli in 1- to 3-day-old turkey poults.
      - (B) Administer 10 mg per poult as a single subcutaneous injection in the nape of the neck as an aid in the control of airsacculitis associated with Mycoplasma meleagridis sensitive to spectinomycin in 1- to 3-day-old turkey poults.
      - (C) Administer 2.5 to 5 mg per chick as an aid in the control of mortality and to lessen severity of infections caused by M. synoviae, Salmonella typhimurium, S. infantis, and E. coli.
    - (ii) **Limitations.** For use only in 1- to 3-day-old turkey poults and newly hatched chicks. Federal law restricts this drug to use by or on the order of a licensed veterinarian.
  - (2) **Dogs—**
    - (i) **Amount.** Administer 2.5 to 5.0 mg per pound of body weight by intramuscular injection twice daily. Treatment may be continued for 4 days.
    - (ii) **Indications for use.** For treatment of infections caused by gram-negative and gram-positive organisms susceptible to spectinomycin.
    - (iii) **Limitations.** Federal law restricts this drug to use by or on the order of a licensed veterinarian.

## Notes

### Amendments

[86 FR 14820, Mar. 19, 2021, as amended at 88 FR 27700, May 3, 2023]

### Authority

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

### Source

Source: 40 FR 13858, Mar. 27, 1975, unless otherwise noted.

### Amendments

[86 FR 14820, Mar. 19, 2021, as amended at 88 FR 27700, May 3, 2023]