---
kind: "section"
citation: "21 C.F.R. § 556.426"
title: "21"
number: "556.426"
heading: "Moxidectin."
url: "https://uscodex.org/cfr/21/556.426"
---

# §556.426. Moxidectin.

- (a) **Acceptable daily intake (ADI).** The ADI for total residue of moxidectin is 4 µg/kg of body weight per day.
- (b) **Tolerances.** The tolerances for moxidectin (marker residue) are:
  - (1) **Cattle.**
    - (i) **Fat (target tissue)—** 900 ppb.
    - (ii) **Liver—** 200 ppb.
    - (iii) **Muscle—** 50 ppb.
    - (iv) **Milk—** 40 ppb.
  - (2) **Sheep.**
    - (i) **Fat (target tissue)—** 900 ppb.
    - (ii) **Liver—** 200 ppb.
    - (iii) **Muscle—** 50 ppb.
- (c) **Related conditions of use.** See §§ [520.1454](/cfr/21/520.1454.md), [522.1450](/cfr/21/522.1450.md), and [524.1450](/cfr/21/524.1450.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.