cannabis) that occurred in Italy in 2017. Using unique and high-frequency data on prescription drug sales and by exploiting the …

In response to the epidemic of prescription-drug abuse, now 49 US states have passed legislation to establish … Prescription Drug Monitoring Programs (PDMPs). These programs track controlled-substance prescribing and usage behavior in an … effort to improve patient outcomes and identify and preempt access by drug abusers. We exploit variation in the timing of …