Kratom industry faces growing restrictions in the US due to overdose concerns and lack of federal regulation.

Kratom, a herb with opioid-like effects, is subject to growing restrictions in the US due to concerns over fatal overdoses and lack of federal regulation. An estimated $1.5bn industry, the herb has been banned in six states and age restrictions imposed in over 15. Kratom has been linked to 91 overdose deaths between 2016 and 2017, and potentially thousands more since.