DRUGBANK ONLINEDrugBank Online is a comprehensive, free-to-access, online database containing information on drugs and drug targets. As both a bioinformatics and a cheminformatics resource, we combine detailed drug (i.e. chemical, pharmacological and pharmaceutical) data with comprehensive drug target (i.e. sequence, structure, and pathway) information. DrugBank Online is widely used by the drug industry, medicinal chemists, pharmacists, physicians, students and the general public.