{"data":{"id":"us/21-cfr-338.3","jurisdiction":"us","citation":"21 CFR 338.3","heading":"Definition.","body":"As used in this part:\nNighttime sleep-aid. A drug that is useful for the relief of occasional sleeplessness by individuals who have difficulty falling asleep.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER D—DRUGS FOR HUMAN USE","PART 338—NIGHTTIME SLEEP-AID DRUG PRODUCTS FOR OVER-THE-COUNTER HUMAN USE","Subpart A—General Provisions"],"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":"67b92e426958b5896b2007902d76c8631c5548eca604458887e6d68ecf76809a","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-338.1","next":"us/21-cfr-338.10"},"notice":"GroundRules: Original legal text. Not legal advice."}