CFR › Title 21 › Part 582 › §582.547721 CFR §582.5477Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Product. Methionine hydroxy analog and its calcium salts.(b)[Reserved](c)Limitations, restrictions, or explanation. This substance is generally recognized as safe when used in animal feeds in accordance with good manufacturing or feeding practice.