Kratom, a traditional Southeast Asian herbal medicine from the leaves of the tropical tree Mitragyna speciosa, has gained favor in the U.S. as a legal high over the past decade. Almost two metric tons of kratom are imported from Southeast Asia monthly. A typical dose of kratom consists of three to five grams, suggesting over 15 million users in the U.S.
Click here for original story, Kratom: What science is discovering about the risks and benefits of a controversial herb
Source: Phys.org