A freely available electronic database containing detailed information about small molecular metabolites found in tea including from different parts of tea plant and different tea products. It is intended to be used for applications in tea metabolomics, discovery of new tea metabolites and general education. The database is designed to contain or link chemical data related to tea. The database (version 1.0) contains 1450 metabolite entries. Each entry contains about 24 data fields with most of the information being devoted to chemical data. Many data fields are hyperlinked to other databases (HMDB, PubChem) and a variety of structure and pathway viewing applets. The TMDB database supports extensive text, chemical structure, NMR data and relational query searches.