21 C.F.R. § 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. (1) Cattle.
  1. (i) Fat (target tissue): 900 ppb.
  2. (ii) Liver: 200 ppb.
  3. (iii) Muscle: 50 ppb.
  4. (iv) Milk: 40 ppb.
2. (2) Sheep.
  1. (i) Fat (target tissue): 900 ppb.
  2. (ii) Liver: 200 ppb.
  3. (iii) Muscle: 50 ppb.
(c) Related conditions of use. See §§ 520.1454, 522.1450, and 524.1450 of this chapter.