Case | Define the ingredient list | Step 1: Identify ingredient RxCUIs | Step 2: Expand ingredients to product RxCUIs | Step 3: Inspect route and dose-form information | Step 4: Filter to oral products | Step 5: Map oral product RxCUIs to active NDCs | Quality-control checks | Confirm the observed routes | Look for non-oral terminology in product names | Review combination products | Check products without active NDCs | Summarize the final definition | A compact alternative with search_drug() | Adapting the workflow | Filter by route during product expansion | Exclude fixed-dose combination products | Include historical RxNorm concepts and NDC associations | Finalizing a route-specific medication definition

Case | Define the ingredient list | Step 1: Identify ingredient RxCUIs | Step 2: Expand ingredients to product RxCUIs | Inspect the product set | Step 3: Map product RxCUIs to NDCs | Step 4: Perform a few quality checks | A compact alternative with search_drug() | Adapting the workflow | Exclude fixed-dose combination products | Use a broader set of product-related TTYs | Include historical RxNorm concepts and NDC associations | Finalizing the medication definition

Overview | Installation | Resolve drug names and identifiers | Inspect RxNorm concepts | Identify ingredient concepts | Expand ingredients to product concepts | Refine products using clinical attributes | Filter products by route | Map between RxCUIs and NDCs | Use search_drug() for a compact workflow | Work with historical concepts and NDC associations | Query drug classes with RxClass | Configure API behavior | Reproducibility | Summary