# Rxnorm Query

> Query the RxNorm drug naming and normalization API. Use whenever the user asks to look up an RxCUI, normalize a drug name, find drug interactions, retrieve brand/trade names, or resolve any clinical drug name via RxNorm. Supports single drug or batch queries. Trigger on mentions of RxNorm, RxCUI, drug normalization, drug interaction lookup, or brand-name resolution.

- Skill: `gabrielmoreira/rxnorm-query` (Agent Skill, multi-file: 6 files)
- Install (CLI): `npx skillmds@latest add gabrielmoreira/rxnorm-query`
- Raw SKILL.md: https://api.skillmd.com/api/skills/gabrielmoreira/rxnorm-query/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: gabrielmoreira (https://skillmd.com/u/gabrielmoreira)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/gabrielmoreira/rxnorm-query

---


# 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

```python
from 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.