{"data":{"id":"us/21-cfr-573.625","jurisdiction":"us","citation":"21 CFR 573.625","heading":"Menadione nicotinamide bisulfite.","body":"The food additive may be safely used as follows:\n(a) The additive is 1,2,3,4-tetrahydro-2-methyl-1,4-dioxo-2-naphthalene sulfonic acid with 3-pyridine carboxylic acid amine (CAS No. 73581-79-0).\n(b) The additive is used or intended for use as a nutritional supplement for both the prevention of vitamin K deficiency and as a source of supplemental niacin as follows:\n(1) In chicken and turkey feeds at a level not to exceed 2 grams per ton of complete feed.\n(2) In growing and finishing swine feeds at a level not to exceed 10 grams per ton of complete feed.\n(c) To assure safe use, the label and labeling of the additive shall bear adequate directions for use.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER E—ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS","PART 573—FOOD ADDITIVES PERMITTED IN FEED AND DRINKING WATER OF ANIMALS","Subpart B—Food Additive Listing"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"ec9d1c8f8887c2c2ad94aba54fd5e2b428b610e8c67e5ba057ea203ed4aa1262","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-573.620","next":"us/21-cfr-573.637"},"notice":"GroundRules: Original legal text. Not legal advice."}