Tidy Utilities for RxNorm and NDC Resolution R package rxref version 0.4.0 Provides a tidy, vectorized interface to the 'RxNorm' / 'RxNav' API for resolving drug names, RxCUIs, National Drug Codes (NDCs), and related drug concept metadata. The package supports workflows for mapping between drug names, RxCUIs, NDCs, ingredients, products, drug classes, and related concepts using data from the National Library of Medicine's 'RxNav' services <https://lhncbc.nlm.nih.gov/RxNav/APIs/> and 'RxNorm' <https://www.nlm.nih.gov/research/umls/rxnorm/>. Software Depends: R (>= 4.1) Imports: cachem, cli, digest, dplyr, httr2 (>= 1.0.0), jsonlite, lifecycle, memoise, purrr, rlang, stringr, tibble, tidyr, vctrs Suggests: curl, knitr, rmarkdown, testthat (>= 3.0.0), withr Steven Smith <ssmith@cop.ufl.edu> Comprehensive R Archive Network (CRAN) Steven Smith [aut, cre] MIT + file LICENSE (https://CRAN.R-project.org/package=rxref/LICENSE) 2026-05-27 application/tgz https://CRAN.R-project.org/package=rxref doi:10.32614/CRAN.package.rxref