Heroin
Heroin (synonyms: diacetylmorphine, diamorphine, acetomorphine; other names - "gera", "gerich", China White) is one of the most widespread synthetic narcotic substances. Heroin acts as a narcotic analgesic. Samples containing heroin seized from illegal circulation are often referred to as "street heroin"; a mixture of heroin and cocaine is called Speed ball; a mixture of heroin, cocaine and LSD - Frisco speed ball
Source: "CRIMINALISTIC INVESTIGATION OF HEROIN. METHODOLOGICAL RECOMMENDATIONS"
(approved by the Standing Committee on Narcotics Control, Protocol No. 3/92-2004 dated June 9, 2004)