Description of Kratom

"Street names for kratom include ‘thang’, ‘kakuam’, ‘thom’, ‘ketum’ and ‘biak’. Kratom leaves are usually consumed fresh, although dried leaves in powder form are also available. The fresh leaves are chewed while the powder form is often either swallowed or brewed into tea. Dried leaves are rarely smoked."

Source: 

UN Office on Drugs and Crime, "The Challenge of New Psychoactive Substances: A Report from the Global SMART Programme" (Vienna, Austria: UNODC Laboratory and Scientific Section, March 2013), p. 14.
http://www.unodc.org/documents...