Amends the Illinois Controlled Substances Act. Makes structural and other changes to the list of controlled substances. Adds xylazine as a Class III controlled substance. Defines "isomer". Effective January 1, 2026.
Senate Committee Amendment No. 4: Provides that notwithstanding the scheduling of xylazine as a Schedule III controlled substance, xylazine shall not be considered a controlled substance when: (1) used by licensed Illinois veterinarians dispensing or prescribing for, or administering to, a nonhuman species of a drug containing xylazine that has been approved by the U.S. Food and Drug Administration; (2) used by licensed Illinois veterinarians dispensing or prescribing for, or administering to, a nonhuman species that is permissible under the Federal Food, Drug, and Cosmetic Act; (3) manufactured, distributed, or used as an active pharmaceutical ingredient for manufacturing an animal drug approved under the Federal Food, Drug, and Cosmetic Act; (4) used by a licensed certified euthanasia technician employed by a certified euthanasia agency; or (5) used by a wildlife biologist engaged in legal or authorized fieldwork under the indirect supervision of a veterinarian.

Statutes affected:
Introduced: 720 ILCS 570/102, 720 ILCS 570/204, 720 ILCS 570/206, 720 ILCS 570/208
Engrossed: 720 ILCS 570/102, 720 ILCS 570/204, 720 ILCS 570/206, 720 ILCS 570/208, 720 ILCS 570/309