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“Nearly three-quarters of the pharmaceuticals deaths are opioid analgesics—prescription painkillers like OxyContin and Vicodin. And while cocaine, heroin and alcohol are all responsible for enough deaths to warrant their own stripes on the chart, many popular illegal drugs—including marijuana and LSD—are such a tiny blip as to be invisible.” – PopSci
https://www.popsci.com/science/article/2013-04/which-drugs-actually-kill-americans?src=SOC&dom=fb