[Fatal opioid overdoses usually occur without anyone being present and able to intervene. Knowledge of the presence of witnesses is important for how naloxone programs should be designed].

Drug mortality has increased in Sweden during the 2000s. The vast majority of deaths are opioid overdoses. The National Board of Health and Welfare recommends that the antidote naloxone and a brief overdose education should be offered to people who are at risk of opioid overdose. A retrospective registry study of 193 forensically examined fatal opioid overdoses in Skåne showed that over 80 percent occurred in private residences, most often the deceased's own home. Other people were present in just over 40 percent of the 193 deaths, but usually in another room or asleep. In most cases, the witnesses were friends, partners, parents, or other people close to the deceased. Naloxone programs should be expanded to include family members and other persons who are close to opioid users, and who therefore may witness or be present early in case of an overdose.