The EDRS interviews are conducted annually with a sentinel group of people who regularly use ecstasy and other stimulants, recruited from all capital cities of Australia (n=799 in 2018). The results from the EDRS interviews are not representative of all people who consume illicit drugs, nor of illicit drug use in the general population, but this is not the aim of these data, instead intended to provide evidence indicative of emerging issues that warrant further monitoring. These findings should be interpreted alongside analyses of other data sources for a more complete profile of emerging trends in illicit drug use, market features, and harms in Australia.