I'm currently operating under the assumption that any two NDCs with the same RxCUI value are pharmaceutical equivalents. Hopefully that's correct.
When querying the NDC data from OpenFDA, I noticed that for any given product NDC, there can be multiple RxCUI values. My understanding of the RxCUI value is very limited, but I would like to get a one-to-one relationship for RxCUI to package NDC. Is this possible?