A tropical plant related to coffee trees, kratom contains an alkaloid called mitragynine that acts on the brain’s opioid receptors and alters mood. It has long been used in Asia, where people chew it or brew it into tea. People also use kratom extracts and resins to make drinks and capsules. The American Kratom Association says 10-16 million Americans regularly use it.

Research on kratom is limited, but some people say it eases pain and anxiety without the negative side effects of opioid drugs. It can also boost energy and improve mental clarity. But the FDA has warned that kratom can be dangerous and has classified it as an opioid. That could lead to health risks including addiction, withdrawal symptoms and heart problems.

The agency’s decision is based on self-reporting from users. And experts warn that rigorous clinical studies need to be done. “The FDA should be working to support and conduct scientifically sound kratom research, rather than using its authority to fuel fear and hysteria,” says Healio Family Medicine physician Joshua Cohen.

If you want to try kratom, it’s best to consult your doctor first. They can help you figure out the best dosage and strain to get the desired effects. The best kratom for anxiety might be red kratom, while green kratom might be better to give you an energy boost. The color has to do with the age of the kratom leaf. Older leaves have higher levels of alkaloids, which produce different effects.kratom benefits