Heroin is classified as a hard drug in terms of drug harmfulness. Like most opioids, unadulterated heroin may lead to adverse effects. The purity of street heroin varies greatly, leading to overdoses when the purity is higher than expected.
heroin is classified as a hard drug in terms of drug harmfulness like most opioids unadulterated heroin may lead to adverse effects the purity of street heroin varies greatly leading to overdoses when the purity is higher than expected