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RxNav: Browser and Application Programming Interfaces for Drug Information Sources [Abstract].
Developed at the National Library of Medicine, RxNav was originally designed for displaying graphically and navigating the relations among various kinds of drug entities (ingredient, brand name, clinical drug, branded drug, etc.) in RxNorm. The entry module supports autocompletion and spelling correction. In addition to drug names, RxNav provides access to the National Drug Codes (NDC codes) for clinical and branded drugs, as well as external links to resources, such as DailyMed.
RxNav was recently extended to provide access to additional drug information sources, including RxTerms (an interface terminology derived from RxNorm) and the Veterans Health Administration (VHA) National Drug File-Reference Terminology (NDF-RT). The three datasets are updated monthly (with additional weekly additions to RxNorm). RxNav always displays the most recent releases of the datasets (from our servers) and does not require users to maintain local copies of the datasets. RxNav is a standalone Java Web Start application and requires an Internet connection. RxNav can be used behind a proxy server and is available at: http://rxnav.nlm.nih.gov/.