one of the main problems of colombia since the end of xxth century has been illegal drug trafficking of cocaine to the united states and the rest of the world. this has led to devastating consequences for colombian population, such as maintenance of armed conflict and forced displacement. the coca eradication has been made through the implementation of different methods, but unfortunately, none of them has been totally effective. at this point, it is essential to outline the importance of colombian supply over foreign demand of cocaine, considering that, in order to provide a solution from the inside of the country, the determinants which affect supply of cocaine to the united states must be clear. therefore, the objective of this document is to study and analyze the characteristics of cocaine market between colombia and the united states due to its importance in social, economic and environmental issues in colombia.