Monensin.
21 C.F.R. § 556.420
in effectEffective: 2024-07-01(a) Acceptable daily intake (ADI). The ADI for total residue of monensin is 12.5 µg/kg of body weight per day.
(b) Tolerances. The tolerances for monensin are:
(1) Cattle. (i) Liver: 0.10 ppm.
(ii) Muscle, kidney, and fat: 0.05 ppm.
(iii) Milk: Not required.
(2) Chickens and turkeys. Edible tissues (excluding eggs): Not required.
(3) Goats. Edible tissues (excluding milk): 0.05 ppm.
(4) Quail. Edible tissues (excluding eggs): Not required.
(c) Related conditions of use. See § 558.355 of this chapter.
Source: eCFRURL: https://www.ecfr.gov/api/versioner/v1/full/2024-07-01/title-21.xmlFetched: 7/26/2026
