"The disadvantage of continuing to describe heroin-related fatalities as 'overdoses' is that it attributes the cause of death solely to heroin and detracts attention from the contribution of other drugs to the cause of death. Heroin users need to be educated about the potentially dangerous practice of concurrent polydrug and heroin use."
Source
Zador, Deborah, Sunjic, Sandra, and Darke, Shane, Heroin-related deaths in New South Wales, 1992: toxicological findings and circumstances, The Medical Journal of Australia, 1996; 164 (4): 204-207.
