From Oregon Live:
The number of people who needed emergency treatment for methamphetamine-related health problems at Oregon Health & Science University fell by a third in the year after the Oregon legislature banned over-the-counter sales of decongestants that can be used to make meth.
In July of 2006, the state required a prescription for Sudafed and other common cold and allergy drugs containing ephedrine, pseudoephedrine or phenylpropanolamine. In early 2006, OHSU’s emergency department had seen an average of 18 patients a week for problems related to meth use. But in the year after the law went into effect, that average fell to 11.3 weekly meth-related visits, OHSU researchers said today at the Society of Academic Emergency Medicine meeting in Phoenix, Ariz.
Dr. Rob Hendrickson, a toxicologist who led the research, called it “one of the first studies to suggest that limitation of supply of an illicit substance may be effective at decreasing its use as well as its associated medical problems.”