SB 1773 Illinois Senate · 104th Regular Session

CONTROLLED SUB-FENTANYL

Summary

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.

Bill status passed 3 of 5 stages cleared

Introduction

Apr 2025

Committee Review

Jun 2026

Senate Passage

Apr 2025

House Passage

Governor

Introduced Apr 30, 2025 Last action Jun 2, 2026

Maddy AI version diff · 1 comparison

What changed between versions

Introduced → Engrossed · 5 edits · Apr 30, 2025

MODERATE

This bill amends the Illinois Controlled Substances Act to add xylazine as a Class III controlled substance and introduces a new definition for 'isomer'. It also reorganizes the list of controlled substances, adding several new anabolic steroids and related compounds to the existing definitions.

Scope change

The bill expands the scope of the Controlled Substances Act by including xylazine and additional anabolic steroids that were previously not explicitly listed.

SUBSTANCES

Added xylazine as a Class III controlled substance to address its use in illicit drug combinations.

Added a new section (309.1) listing additional anabolic steroids and related compounds, including methyltrienolone and various 19-nor derivatives.

DEFINITION

Added a legal definition for 'isomer' to clarify how chemical variations are treated under the Act.

Modified the list of controlled substances in Sections 102, 204, 206, and 208 to incorporate the new entries and structural changes.

TIMELINE

Established an effective date of January 1, 2026, for the new controlled substance classifications.

Floor votes · Senate Apr 30, 2025

How they voted

49–1

Passed · 8 other

Total votes 58

Apr 30, 2025

D Democratic39

31 Yea 1 Nay 7

79% Yea

R Republican19

18 Yea 1

94% Yea

Vote distribution

All Yea All Nay Mixed No data

Full legislative history

Actions timeline

Total actions

100

Key actions

Committee

Amendments

Jun 2, 2026

Committee

Rule 19(a) / Re-referred to Rules Committee

lower

Feb 11, 2026

Lower · Passed

Approved for Consideration Rules Committee; 005-000-000

lower

Jun 1, 2025

Committee

House Floor Amendment No. 1 Rule 19(c) / Re-referred to Rules Committee

lower

Jun 1, 2025

Committee

Rule 19(a) / Re-referred to Rules Committee

lower

May 29, 2025

Lower · Passed

House Floor Amendment No. 1 Recommends Be Adopted Judiciary - Criminal Committee; 008-005-000

lower

May 29, 2025

Lower · Passed

House Floor Amendment No. 1 Rules Refers to Judiciary - Criminal Committee

lower

May 28, 2025

Committee

House Floor Amendment No. 1 Referred to Rules Committee

lower

May 28, 2025

Introduced

House Floor Amendment No. 1 Filed with Clerk by Rep. Katie Stuart

lower

May 9, 2025

Lower · Passed

Do Pass / Short Debate Judiciary - Criminal Committee; 011-001-000

lower

May 6, 2025

Lower · Passed

Motion Filed to Suspend Rule 21 Judiciary - Criminal Committee; Rep. Elizabeth "Lisa" Hernandez

lower

May 6, 2025

Committee

Assigned to Judiciary - Criminal Committee

lower

May 1, 2025

Committee

Referred to Rules Committee

lower

Apr 30, 2025

Introduced

Arrived in House

lower

Apr 30, 2025

Upper · Passed

Third Reading - Passed; 049-001-000

upper

Apr 11, 2025

Committee

Senate Committee Amendment No. 3 Rule 3-9(a) / Re-referred to Assignments

upper

Apr 11, 2025

Committee

Senate Committee Amendment No. 2 Rule 3-9(a) / Re-referred to Assignments

upper

Apr 11, 2025

Committee

Senate Committee Amendment No. 1 Rule 3-9(a) / Re-referred to Assignments

upper

Apr 3, 2025

Upper · Passed

Do Pass as Amended Criminal Law; 009-000-000

upper

Apr 2, 2025

Upper · Passed

Senate Committee Amendment No. 4 Adopted

upper

Apr 2, 2025

Upper · Passed

Senate Committee Amendment No. 4 Assignments Refers to Criminal Law

upper

Apr 2, 2025

Upper · Passed

Senate Committee Amendment No. 3 Pursuant to Senate Rule 3-8(b-1), the following amendments will remain in the Committee on Assignments

upper

Apr 2, 2025

Committee

Senate Committee Amendment No. 4 Referred to Assignments

upper

Apr 2, 2025

Introduced

Senate Committee Amendment No. 4 Filed with Secretary by Sen. Julie A. Morrison

upper

Apr 1, 2025

Committee

Senate Committee Amendment No. 3 Referred to Assignments

upper

Apr 1, 2025

Introduced

Senate Committee Amendment No. 3 Filed with Secretary by Sen. Julie A. Morrison

upper

Apr 1, 2025

Upper · Passed

Senate Committee Amendment No. 2 Assignments Refers to Criminal Law

upper

Mar 28, 2025

Committee

Senate Committee Amendment No. 2 Referred to Assignments

upper

Mar 28, 2025

Introduced

Senate Committee Amendment No. 2 Filed with Secretary by Sen. Julie A. Morrison

upper

Mar 21, 2025

Upper · Passed

Rule 2-10 Committee Deadline Established As April 4, 2025

upper

Mar 4, 2025

Upper · Passed

Senate Committee Amendment No. 1 Assignments Refers to Criminal Law

upper

2 primary · 51 co-sponsors