Added support for retrieving active and historical RxNorm product
concepts in product discovery workflows, including
products_for_ingredients() and related search helpers.
Added concept_status support to allow users to request
active concepts only or active plus historical RxNorm concepts, where
supported.
Added exclude_products_with_ingredients(), a
product-level filtering helper for removing RxNorm products that contain
user-specified ingredients.
exclude_products_with_ingredients() supports fixed-dose
combination products represented with semicolon-delimited ingredient
names or RxCUIs, such as "atenolol; chlorthalidone".
Added safer internal handling for historical concept verification
and lookups, reducing failures when RxNorm returns incomplete, empty, or
unexpected API responses.
Improvements
Improved retrieval of clinical product attributes for historical
RxCUIs by attempting to recover dose form, dose form group, route,
ingredient count, and ingredient metadata when available.
Improved route filtering workflows for products that include
historical RxNorm concepts.
Improved fixed-dose combination formatting in
get_clinical_attributes(). Ingredient fields such as
ingredient_rxcui, ingredient_name, and
ingredient_tty now use semicolon-delimited strings instead
of pseudo-vector strings.
Improved consistency of product-level ingredient metadata to support
cleaner downstream joins and filtering.
Improved reuse of cached API responses in product discovery,
historical concept lookup, and clinical attribute workflows to reduce
repeated calls to the RxNorm and RxClass APIs.
Added or improved progress reporting for longer-running product
discovery workflows, including API retrieval steps where
appropriate.
Updated route-specific vignette example datasets so package
vignettes do not rely on live API calls during package checks.
Updated vignette example datasets to avoid duplicated
.x / .y join columns and to use current,
singular column naming conventions.
Updated README examples and package vignettes to reflect current
function behavior, argument names, output columns, and recommended
workflows.
Improved internal helper functions for normalizing product
ingredient fields and handling fixed-dose combination products.
Bug fixes
Fixed issues where historical or obsolete RxCUIs could return
incomplete clinical attributes and be unintentionally dropped from
route-filtered workflows.
Fixed cases where historical product concepts could produce
incorrect or inflated ingredient counts.
Fixed validation and test coverage for concept_status
arguments.
Fixed issues arising from incomplete or malformed historical concept
lookups.
Fixed vignette data-generation issues that could create unexpected
NA rows in pre-built example datasets.
Fixed CRAN submission issues related to API name formatting, web
references, and package citation handling.
Documentation
Updated package documentation to describe active and historical
RxNorm concept support.
Updated documentation for product discovery, clinical attribute
retrieval, route filtering, and fixed-dose combination handling.
Updated NEWS, README, vignettes, and CRAN-facing metadata for the
0.4.0 release.
Updated package citation handling to avoid errors when the package
is not installed.
rxref 0.3.0
Removed the experimental set_backend() helper.
rxref currently uses the RxNorm/RxClass APIs directly.