Effective action against doping in competitive sports requires cooperative action, not only between governments and non-governmental organizations, but also internationally. Guidelines are set forth for actions to be taken to prevent the use of drugs by athletes. Part 1 delineates measures to be taken by governments. These include legislative and/or other measures, establishing laboratories and encouraging research, developing educational programs, and providing subsidies for dope controls. In part 2, rcommendations are made on measures to be taken by sports organizations. These include unified enforcement of regulations, using dope control facilities, and reinforcement of eligibility provisions, penalties, and qualifying standards. Appended are statements on: (1) standards for dope control laboratories; (2) the dangers of doping; (3) formation of standardized international regulations; (4) procedures for carrying out doping controls; and (5) responsibilities in dealing with positive laboratory test results. (JD)