Courtney Knapp kindly referred me to a new paper by the Cascade Policy Institute by Chris Stomberg and Arun Sharma that will be of great interest to those of you who use cold medicine from time to time. To curb the manufacture and, presumably, the consumption of methamphetamine, Oregon decided require that pharmacies put cold medicines that use pseudoephedrine behind the counter. The authors conclude that while this measure has inconvenienced cold sufferers, it has done little if anything to achieve its intended purpose.