RxNorm Query Skill
Look up clinical drug information via the RxNorm REST API (no API key required).
Capabilities
| Function | Input | Returns |
|---|---|---|
find_rxcui(name) | drug name string | RxCUI string or None |
get_drug_info(rxcui) | RxCUI string | full info dict |
get_drug_interactions(rxcui) | RxCUI string | list of interaction dicts |
get_related_drugs(rxcui, tty) | RxCUI + term type | list of related drug dicts |
normalize_drug_name(name) | approximate drug string | normalized name string |
query(entity) | str or list[str] | dict keyed by drug name |
summarize(results) | output of query() | compact text summary |
Quick Start
pythonfrom 08_RxNorm import query, summarize # Single drug results = query("aspirin") print(summarize(results)) # Batch drugs results = query(["tylenol", "metformin", "ibuprofen"]) print(summarize(results))
query() Output Schema
{ "<drug_name>": { "rxcui": "1191" | None, "normalized_name": "aspirin", "interactions": [ {"description": "...", "severity": "...", "drugs": ["...", "..."]} ], "related": [ {"rxcui": "...", "name": "...", "tty": "..."} ] } }
Notes
- API: RxNorm REST —
https://rxnav.nlm.nih.gov/REST - Auth: None required
- Rate limits: NLM asks for reasonable use; no hard key-based limit
- Related drug types (
tty):BN(brand name),SBD(branded dose),SCD(clinical dose), etc.


