Kratom is a tree native to Southeast Asia (Thailand, Malaysia, Indonesia, Borneo, etc.). Its botanical name is Mitragyna speciosa. Kratom is in the same family as the coffee tree (Rubiaceae). The leaves of kratom have been used as an herbal drug from time immemorial by peoples of Southeast Asia. It is used in folk medicine as a stimulant (at low doses), sedative (at high doses), recreational drug, pain killer, medicine for diarrhea, and treatment for opiate addiction. Many people report that kratom is an effective treatment for arthritis, restless legs syndrome (RLS), and fibromyalgia.What are the effects? Is a rather unique drug in that a low to moderate dose will usually (but not always) be stimulating, while a high dose is almost always quite sedating. This is apparently because the active alkaloids have both stimulant and sedative effects. Which predominates probably depends both on dosage and individual differences between users. Many people report that the effects are very similar to opiate drugs. From a pharmacological perspective this is not surprising because plant contains alkaloids that act as opiate receptor agonists. Interestingly, although the plant has a similar mechanism of action as many opiate pain medications it does not appear to be nearly as addictive. In fact many people use kratom to overcome opiate addiction.