The Human Metabolome Database (HMDB) is a freely available electronic database containing detailed information about small molecule metabolites found in the human body. It is intended to be used for applications in metabolomics, clinical chemistry, biomarker discovery and general education.
Human Metabolome Database is covered by Thomson Reuters Data Citation Index. Many data fields are hyperlinked to other databases (KEGG, PubChem, MetaCyc, ChEBI, PDB, UniProt, and GenBank). Four additional databases, DrugBank, T3DB, SMPDB and FooDB are also part of the HMDB suite of databases.