Organizational Structure Bhutan Food and Drug Authority Mandates BFDA is mandated by the aforementioned legislations to:Ensure quality and safety of food and feed;Ensure quality, safety and effectiveness of medical products;Regulate narcotic drugs, psychotropic substances (NDPS), precursor chemicals and tobacco and tobacco products; andProtect biodiversity, environment and agricultural system from pests and diseases, invasive species and genetically modified organisms.