Black Heroin

A form of heroin from Mexico that is dark, sticky, semisolid and difficult to ‘cut’—adulterate—because of its viscid nature. It is extremely potent—purity of up to 70%—and highly addictive
References in periodicals archive ?
Although black heroin users or black drug users in general may remain underrepresented in drug treatment services, the characteristics of those who do register may provide the best approach to the problems associated with black drug use.
This has meant that black heroin and injecting drug users tend to deny or hide these patterns of drug use--viewed as "junkie behavior"--for fear of being ostracized from other black drug using groups and the wider black community (see Perera et al.
Untouchable by Harlem residents and the police, Barnes was the first black heroin kingpin in history.