StacksVerified U.S. regulatory reference

21 CFR §556.226

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 enrofloxacin is 3 µg/kg of body weight per day.
  2. (b)Tolerances. The tolerances for enrofloxacin are:
    1. (1)Cattle. Liver (target tissue): 0.1 ppm desethylene ciprofloxacin (marker residue).
    2. (2)Swine. Liver (target tissue): 0.5 ppm enrofloxacin (marker residue).
  3. (c)Related conditions of use. See §§ 516.812 and 522.812 of this chapter.