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List of Schedule 4 (IV) Controlled Substances - Drugs.com
List of Schedule IV controlled substances (U.S.) - Wikipedia
Drug Scheduling & Classifications (Schedule I-V Controlled Drugs)
Diversion Control Division | Controlled Substance Schedules
Drug Classifications: Schedule I, II, III, IV, V - MedShadow
Drug Scheduling - DEA.gov
21 U.S. Code § 812 - Schedules of controlled substances
eCFR :: 21 CFR 1308.14 -- Schedule IV.
Controlled Substances & CSA Schedule Lists - Drugs.com