f92a15c9_Chart_of_illegal_drugs__LOOKS_LIKE
[DRUG TYPE] Heroin [STREET NAME] Smack, Horse, Mud, Brown sugar, Junk, Black tar, and Big H [DETECTABLE IN BODY] 1 to 4 days [HOW USED] Injected, smoked, or inhaled [LOOKS LIKE] 
White to dark-brown powder or tarlike substance
Chart of illegal drugs
LOOKS LIKE