Kratom

Kratom (Mitragyna speciosa), which belongs to the coffee family, is used for centuries by people in Southeast Asia and Papua New Guinea for its pain-relieving and mildly simulating effects. Though it became highly popular in the United States, the FDA has warned against its usage because of the risks of addiction and abuse.
Thailand recently decriminalized kratom, though it is viewed by some experts as unsafe. With the new law, Thailand allows the general public to consume and sell kratom legally. It is estimated that it will save the government around 50 million USD in prosecution costs.