Contrary to what drug warriors argue, drug decriminalization in Portugal has been an outstanding success. Since the policy change, problem drug-usage rates have actually declined, as has the number of intravenous HIV/AIDS transmissions and drug-related deaths. These outcomes are the product of both decriminalization and harm-reduction programs working in concert. Here, I run through the data in these areas while also debunking some of the arguments made by critics of Portugal's decriminalization.