Being one of the newer strains many people do not know the origins of this variety. Riau is a province of Indonesia, and is located in the central eastern coast of Sumatra along the Strait of Malacca. Until 2004 the province included the offshore Riau Islands. The kratom grown in this area would be most easily compared to the more well known strains of Indonesia.
Kratom is not approved for internal use by the FDA, and is sold for external use only.