Such programs play a vital role in reducing and preventing prescription drug abuse and drug overdose. PDMPs collect data from pharmacies on dispensed controlled substance prescriptions and make it available to authorized users. PDMPs are essential prevention tools to reduce the prevalence of drug addiction and its negative consequences. A full copy of the evaluation can be found at http://www.chfs.ky.gov/NR/rdonlyres/8D6EBE65-D16A-448E-80FF-30BED11EBDEA/0/KentuckyHB1ImpactStudyReport03262015.pdf