"In July 2001, Portugal decriminalized the personal use and possession of all illicit drugs. Now, following passage of Law 30/2000, Portugal refers cases of consumption, purchase, or possession of up to a ten days' supply of an illicit drug to an administrative panel, which makes recommendations for treatment, fines, warnings, or other penalties. Trafficking and cultivation of illicit substances, as well as possession of quantities exceeding a ten days' supply, remain criminal offenses. Portugal's decriminalized drug policy has been cited as proof that softening drug laws does not increase illicit drug use or the consequences of drug use. This contention is based primarily on the findings published in a 2009 Cato Institute report. It is difficult, however, to draw any clear, reliable conclusions from the report regarding the impact of Portugal's drug policy changes."
National Criminal Justice Reference Service: https://www.ncjrs.gov