---
kind: "section"
citation: "21 C.F.R. § 558.330"
title: "21"
number: "558.330"
heading: "Lubabegron."
url: "https://uscodex.org/cfr/21/558.330"
---

# §558.330. Lubabegron.

- (a) **Specifications.** Each pound of Type A medicated article contains 4.54 grams (10 grams per kilogram) or 22.7 grams (50 grams per kilogram) of lubabegron as lubabegron fumarate.
- (b) **Sponsor.** See No. 058198 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Related tolerances.** See [§ 556.370](/cfr/21/556.370.md) of this chapter.
- (d) **Special considerations.** Labeling shall bear the following caution statements:
  - (1) Lubabegron has not been approved for use in breeding animals because safety and effectiveness have not been evaluated in these animals.
  - (2) **Do not allow horses or other equines access to feed containing lubabegron.**
  - (3) A decrease in dry matter intake may be noticed in some animals receiving lubabegron.
- (e) **Conditions of use.**
  - (1) **It is used in cattle feed as follows—**
  - (2) Lubabegron may also be used in combination with:
    - (i) [Reserved]
    - (ii) Tylosin as in [§ 558.625](/cfr/21/558.625.md).

## Notes

### Amendments

[84 FR 12501, Apr. 2, 2019, as amended at 84 FR 53311, Oct. 7, 2019; 88 FR 14905, Mar. 10, 2023; 88 FR 84701, Dec. 6, 2023; 90 FR 6802, Jan. 21, 2025; 91 FR 5301, Feb. 6, 2026]

### Authority

Authority: 21 U.S.C. 354, 360b, 360ccc, 360ccc-1, 371.

### Source

Source: 40 FR 13959, Mar. 27, 1975, unless otherwise noted.

### Amendments

[84 FR 12501, Apr. 2, 2019, as amended at 84 FR 53311, Oct. 7, 2019; 88 FR 14905, Mar. 10, 2023; 88 FR 84701, Dec. 6, 2023; 90 FR 6802, Jan. 21, 2025; 91 FR 5301, Feb. 6, 2026]