Zinc methionine sulfate.
21 C.F.R. § 172.399
in effectEffective: 2024-07-01Zinc methionine sulfate, CAS Reg. No. 56329-42-1, may be safely used in accordance with the following prescribed conditions:
(a) The additive is the product of the reaction between equimolar amounts of zinc sulfate and DL-methionine in purified water.
(b) The additive meets the following specifications:
(c) The additive is used in tablet form as a source of dietary zinc.
Zinc content—19 to 22 percent.
C5H11NO2S “DL-methionine”—46 to 50 percent.
Cadmium—not more than 0.05 part per million.
Source: eCFRURL: https://www.ecfr.gov/api/versioner/v1/full/2024-07-01/title-21.xmlFetched: 7/26/2026
