What is kratom, the 'gas station heroin' alarming officials in the US? – BBC

What is kratom, the ‘gas station heroin’ alarming officials in the US?  BBCKratom warning: Doctor explains rising toxicity concerns  NewsNationKratom warnings grow in Virginia as doctors report rise in overdoses and addiction cases  WTVR.comWhat is kratom? What you need to know about the supplement banned in Arkansas  K8 News | Jonesboro, ArkansasKratom under fire: The hidden dangers behind the drug linked to Ole Miss student deaths.  yahoo.com