StacksVerified U.S. regulatory reference

21 CFR §556.426

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Acceptable daily intake (ADI). The ADI for total residue of moxidectin is 4 µg/kg of body weight per day.
  2. (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.
  3. (c)Related conditions of use. See §§ 520.1454, 522.1450, and 524.1450 of this chapter.