Health Action International (HAI) presents a first-of-its-kind, free, online encyclopaedia of the politics of medicines from the perspective of HAI's expert network of consumer groups, non-governmental organisations, health care professionals, academics, media and individual partners in more than 70 countries. This project will become a comprehensive, easy-to-use and accessible resource for a broad audience that is engaged, or interested, in health advocacy, activism, civil society capacity building, or public health outcomes of the medicines market.