Redirect Notice - April 2, 2018 =============================== The file you are trying to download still exists, but is no longer being updated in this directory. Please read the following redirect notice carefully. Users are encouraged to update bookmarks and download scripts as needed. Publication of NDF-RT has ended. The Medication Reference Terminology (MED-RT) is the evolutionary successor to the Veterans Health Administration National Drug File – Reference Terminology (VHA NDF-RT™). Both are formal ontological representations of medication terminology, pharmacologic classifications, and asserted authoritative relationships between them. Distribution of MED-RT is through the same channels on the same monthly schedule as its predecessor NDF-RT, in XML and other formats. The full MED-RT release files are available at: https://evs.nci.nih.gov/ftp1/MED-RT/ Past full releases of NDF-RT remain archived at: https://evs.nci.nih.gov/ftp1/NDF-RT/Archive/ MED-RT SPL Subsets are available at: https://evs.nci.nih.gov/ftp1/FDA/MEDRT/ NOTE: Structual Class terms are now represented directly in MeSH. Past NDF-RT SPL Subsets remain archived at: https://evs.nci.nih.gov/ftp1/FDA/ndfrt/Archive/ Questions? Please contact ncicbiit@mail.nih.gov.