What proportion of cannabis users use other drugs concurrently?

The majority (91%) of Australians who used cannabis in the past 12 months used at least one other drug at the same time as cannabis. Alcohol (82%) was the drug most often used with cannabis, followed by tobacco (64%).

82% of Australians who used cannabis in the past 12 months concurrently used alcohol; 64% concurrently used tobacco; 18% concurrently used ecstasy; 15% concurrently used methamphetamine; 12% concurrently used hallucinogens; 10% concurrently used cocaine; 7% concurrently used prescription / over the counter drugs; and 5% concurrently used some other drug.

Source: Australian Institute of Health and Welfare (AIHW). 2013 National Drug Strategy Household Survey (NCETA secondary analysis, 2015). 

Please note: Percentages do not tally to 100% as survey respondents could select more than one drug type.