Kratom (Mitragyna speciosa) is a tropical evergreen tree from Southeast Asia and is belonging to Thailand, Malaysia, Indonesia and Papua New Guinea. Kratom, the initial name used in Thailand, is a member of the Rubiaceae family. Other members of the Rubiaceae household consist of coffee and gardenia. The leaves http://knsz.prz.edu.pl/forum/member.php?action=profile&uid=10089