Kratom has been used traditionally for thousands of years with 0 reported deaths.

http://www.americankratom.org/images/file/Document%2011%20Jane%20Babin%20Report%20on%20FDA%20Kratom%20Death%20Data%20March%201%202018%20FINAL.pdf

Here is the toxicology reports from 44 different cases the FDA said were from overdoses of Kratom(mitragyna speciosa). Proof that from just Kratom alone there is still 0 reported deaths.