RT Journal Article SR 00 ID 10.1016/j.jhealeco.2020.102371 A1 Carrieri, Vincenzo A1 Madio, Leonardo A1 Principe, Francesco T1 Do-It-Yourself medicine? The impact of light cannabis liberalization on prescription drugs JF Journal of Health Economics YR 2020 FD 2020-12 IS 74 K1 Light cannabis, self-medication, marijuana, difference-in-difference, prescription drugs, CBD. AB Governments worldwide are increasingly concerned about the booming use of CBD (cannabidiol) products. However, we know little about the impact of their liberalization. We study a unique case of unintended liberalization of a CBD-based product (light cannabis) that occurred in Italy in 2017. Using unique and high-frequency data on prescription drug sales and by exploiting the staggered local availability of the new product in each Italian province, we document a significant substitution effect between light cannabis and anxiolytics, sedatives, opioids, anti-depressants and anti-psychotics. Results are informative for regulators and suggest that bans on light cannabis use would disregard the needs of patients to seek effective reliefs of their symptoms. PB Elsevier SN 0167-6296 LK https://publications.ut-capitole.fr/id/eprint/41762/ UL https://www.tse-fr.eu/sites/default/files/TSE/documents/doc/by/madio/health_madio.pdf