Scheduled substances
Learn about scheduled substances regulated under Singapore’s Misuse of Drugs Act, including CNB circulars.
Last updated 20 November 2025
Circular 1 - dated 26 May 2008
Circular Reference No.: CNB/227A
Circular 2 - dated 01 Apr 2001
Circular Reference No.: CNB/227A
Circular 3 - dated 27 Jun 2014
Circular Reference No.: CNB/227A
Circular 4 - dated 02 Sep 2014
Circular Reference No.: CNB/227A
Circular 5 - dated 05 Nov 2015
Circular Reference No.: CNB/PC CTRL/00014
Circular 6 - dated 04 Oct 2017
Circular Reference No.: CNB/227A
Circular 7 - dated 01 Jun 2022
Circular Reference No.: CNB/227A
Circular 8 - dated 29 May 2024
Circular Reference No.: CNB/227A
Circular 9 - dated 29 November 2024
Circular Reference No.: CNB/227A