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  1. List of Schedule 4 (IV) Controlled Substances - Drugs.com

  2. List of Schedule IV controlled substances (U.S.) - Wikipedia

  3. Drug Scheduling & Classifications (Schedule I-V Controlled Drugs)

  4. Diversion Control Division | Controlled Substance Schedules

  5. Drug Classifications: Schedule I, II, III, IV, V - MedShadow

  6. Drug Scheduling - DEA.gov

  7. 21 U.S. Code § 812 - Schedules of controlled substances

  8. eCFR :: 21 CFR 1308.14 -- Schedule IV.

  9. Controlled Substances & CSA Schedule Lists - Drugs.com