FDA Structured Product Label Drugs and Ingredients Added to the RxNorm Current Prescribable Content Subset. NLM Tech Bull. 2012 Sep-Oct;(388):b4.
Previous releases of the RxNorm Current Prescribable Content subset contained only normalized RxNorm information. Beginning with the October release, the Current Prescribable Content subset will also include drugs and ingredients from the Food and Drug Administration structured product labels (SPLs). In addition to SPL drugs and ingredients, relationships between drugs and ingredients, National Drug Codes (NDCs), and other SPL data will be added to the subset. The subset will remain in the public domain, and no license will be required to download it.