The DrugBank database available at the University of Alberta is a unique bioinformatics and cheminformatics resource that combines detailed drug (i.e. chemical, pharmacological and pharmaceutical) data with comprehensive drug target (i.e. sequence, structure, pathway) information. The database contains nearly 4100 drug entries including >1000 FDA-approved small molecule drugs, 110 FDA-approved biotech (protein/peptide) drugs, >100 nutraceuticals and >3200 experimental drugs. Additionally, more than 15,000 protein (i.e. drug target) sequences are linked to these drug entries. Each DrugCard entry contains more than 80 data fields with half of the information being devoted to drug/chemical data and the other half devoted to drug target or protein data. Users may query DrugBank in any number of ways. It is maintained by David Wishart.