---
kind: "section"
citation: "21 C.F.R. § 556.308"
title: "21"
number: "556.308"
heading: "Halofuginone."
url: "https://uscodex.org/cfr/21/556.308"
---

# §556.308. Halofuginone.

- (a) **Acceptable daily intake (ADI).** The ADI for total residue of halofuginone hydrobromide is 0.7 µg/kg of body weight per day.
- (b) **Tolerances.** The tolerances for halofuginone (marker residue) are:
  - (1) **Chickens.** Liver (target tissue): 0.16 ppm.
  - (2) **Turkeys.** Liver (target tissue): 0.13 ppm.
- (c) **Related conditions of use.** See [§ 558.265](/cfr/21/558.265.md) of this chapter.

## Notes

### Authority

Authority: 21 U.S.C. 342, 360b, 371.

### Source

Source: 84 FR 32993, July 11, 2019, unless otherwise noted.