raw/README.txt

This dataset consists of the substances that make up drugs in the National Drug
Code Directory maintained by the Food and Drug Administration. The original data
was downloaded from https://www.fda.gov/Drugs/InformationOnDrugs/ucm142438.htm.
Each simplex corresponds to an NDC code for a drug, where the nodes are the
substances that make up that drug. Timestamps are in days and represent when the
drug was first marketed.

The file NDC-substances-node-labels.txt maps the node IDs to the substances.

The nth line in NDC-classes-simplex-labels.txt is the name of the drug
corresponding to the nth simplex.