Kratom is a derivative of a plant found in Southeast Asia that produces euphoric effects similar to opioids, but it is not an opioid.
Kratom is not currently illegal in the United States. It is much less commonly used in the U.S. and so the data on its risks are limited. However, it is thought to be “addictive” in the sense that patients can become physiologically dependent on kratom and even potentially have cravings and side effects after discontinuing use.
As it is not a regulated substance, its use is not recommended.