Look up drug names, RxCUIs, ingredients and interactions in RxNorm.
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Scored across 13 tools
Most tools map to distinct RxNav endpoints and purposes, but name-matching tools (find_rxcui_by_name, get_approximate_match, get_drugs, get_spelling_suggestions) have overlapping search intents, and get_all_related vs get_related_by_type plus get_concept_properties vs get_property require careful reading to distinguish.
All 13 tools share the rxnorm_ prefix and a consistent verb_noun snake_case pattern (get_X, find_X_by_name), making the surface highly predictable.
13 tools is a well-scoped set that maps cleanly onto the RxNav/RxClass REST endpoints, with each tool earning its place and little redundancy.
Coverage spans name lookup, fuzzy matching, related concepts, drug classes, properties, NDCs, history, and metadata, which is strong for the RxNorm domain; minor gaps like reverse NDC-to-RxCUI lookup or drug-drug interaction endpoints exist but core workflows are covered.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
rxnorm_find_rxcui_by_name1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"rxnorm_get_all_related1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"rxnorm_get_approximate_match1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"rxnorm_get_class_members1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"rxnorm_get_concept_properties1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"rxnorm_get_drug_classes1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"rxnorm_get_drugs1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"rxnorm_get_history_status1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"rxnorm_get_ndcs1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"rxnorm_get_property1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"rxnorm_get_related_by_type1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"rxnorm_get_spelling_suggestions1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"rxnorm_get_term_types1 field changedInput schema / $schemaPrevious value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"US medication lookup: drug search, forms and strengths, NDC/RxCUI, recalls, shortages.
Drug-drug interaction checker for clinical LLMs using RxNorm and DailyMed.
RxNorm MCP — wraps the NLM RxNav REST API (free, no auth)
Search DailyMed drug labels, SPLs, NDCs and packaging.
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