The National Drug File RT (NDF-RT) is published by the US Veterans' Administration (VA). NDF-RT covers clinical drugs used at the VA. The NCI version of NDF-RT is used by NCI to provide automated terminology access to the Food and Drug Administration (FDA) Structured Product Label (SPL) initiative. NCI makes its version of NDF-RT available publicly thru the Web, download via FTP and via open APIs for Java, SOAP and HTTP.