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The Slone Drug Dictionary™ is a computerized coding system that is designed for use in the collection and analysis of drug data in epidemiological studies. The dictionary facilitates the complex task of coding medication names for analysis.

The dictionary has been used for drug coding by the Slone Epidemiology Center and numerous organizations and studies since the 1970′s,  providing a proven and useful tool for analyzing and collecting drug exposure and utilization information. Its content includes individual codes for prescription and non-prescription drug products, dietary supplements, and their active ingredients. Linkages within the dictionary database allow investigators to easily identify groups of exposures according to a specific component, product, or group of products.

The dictionary database is available for license by those requiring a reliable, flexible, and comprehensive method to code and interpret drug information.


Founded in 1975, the Slone Epidemiology Center is a public health research center at Boston University focusing on the potential risks and safety of medications in adults and children. The SEC is primarily funded by grants and contracts from the National Institutes of Health and other government agencies, pharmaceutical companies, and private foundations.