Kratom (mitragyna speciosa) is a tree native to Southeast Asia. The leaves contain a chemical called mitragynine, which is its active properties. It is sold in powder, capsule and teas.
Mitragyna speciosa is a tropical evergreen tree in the coffee family native to Southeast Asia. It is indigenous to Thailand, Indonesia, Malaysia, Myanmar, and Papua New Guinea, where it has been used in herbal medicine since at least the nineteenth century.