The Ecstasy and Related Drug Reporting System (EDRS) has been monitoring patterns of e-cigarette use and behaviour since 2014. Thus, this bulletin aims examine the past six-month use of any e-cigarettes (prescribed and non-prescribed) among a sample of people who regularly use ecstasy and/or other illicit stimulants in Sydney, NSW, from 2014-2022. This bulletin will also examine the use of e-cigarettes as a smoking cessation tool and the concurrent use of tobacco and e-cigarettes (i.e., ‘dual’ use).