Stopping Overdoses of Fentanyl Analogues Act This bill permanently adds fentanyl-related substances to schedule I of the Controlled Substances Act. (A schedule I controlled substance is a drug, substance, or chemical that has a high potential for abuse; has no currently accepted medical value; and is subject to regulatory controls and administrative, civil, and criminal penalties under the Controlled Substances Act.) Fentanyl-related substances are currently regulated under schedule I through a temporary order issued by the Drug Enforcement Administration. The temporary order expires December 31, 2024.