The use of the Delphi method as a systematic and logical approach to establishing consensus among international experts on the priorities for interventions in national drug policies in developing countries is described. The Delphi survey showed a high degree of reliability, as evidenced by the high response rate, the quality of respondents, and the high standard for consensus. In addition to creating consensus on key issues and key components for priority intervention, the study identified six components that could constitute a basic framework for designing drug policy in developing countries. The study's conclusions have important implications for decision-makers within international development agencies and national governments.