Closer to home – drug use in six Latin American countries in focus. UNODC and CICAD-OEA present first comparative study on drug consumption in 6 countries in South America.26 June 2008 – Argentina, Chile and Uruguay are the countries with the greatest use of illicit drugs, Bolivia appears to be in an intermediate situation, and Peru and Ecuador have detected lower consumption of these drugs. However, in the case of Peru, approximately one out of two cocaine consumers present signs of dependency, the first Comparative Study on Drug Consumption in the general population between the ages of 15 and 64 indicates. [ See ]