Fentanyl will kill with very small doses. https://www.statnews.com/2016/09/29/fentanyl-heroin-photo-fatal-doses/ https://www.statnews.com/2016/09/29/fentanyl-h

Fentanyl will kill with very small doses. https://www.statnews.com/2016/09/29/fentanyl-heroin-photo-fatal-doses/ https://www.statnews.com/2016/09/29/fentanyl-heroin-photo-fa... It's hard to find truth in any drug related article, but this is the best we have.