Despite the growth in the literature on the opioid crisis, questions remain on how to best measure the local supply of prescription opioids. We document that measures based on the number of prescriptions largely track hydrocodone, while measures based on morphine-equivalent amounts largely track...

We estimate the causal effects of heroin use on labor market outcomes by proxying for heroin use with prior exposure to oxycodone, the largest of the prescription opioids with a well-documented history of abuse. After a nationwide tightening in the supply of oxycodone in 2010, states with...