💊 RxNorm Drug Normalizer

Normalize drug names using the NIH RxNorm API — the official US National Library of Medicine drug terminology standard. Search any brand or generic drug name and get back RxCUI codes, brand↔generic mappings, active ingredients, dose forms, NDC cross-references, and optional DailyMed drug label data.

No API key required — the NIH RxNorm API is free and open to all.

Features

• 🔍 Fuzzy drug search — handles misspellings via approximate matching
• 🔄 Brand ↔ Generic mapping — 200+ built-in brand-to-generic translations
• 📋 RxCUI concept resolution — get all related concepts (brands, ingredients, dose forms, synonyms)
• 📦 NDC code lookup — cross-reference NDC codes to RxCUI concepts
• 🏷️ DailyMed integration — optionally fetch drug label summaries from the FDA/NLM DailyMed
• 📊 Normalized output — cleaned drug names, extracted strengths and dose forms
• 📝 Human-readable summary — beautiful ASCII table output in the run log

Input Parameters

Parameter	Type	Required	Default	Description
drugName	string	Yes*	—	Brand or generic drug name (e.g. "Tylenol", "acetaminophen", "Lipitor")
searchMode	select	No	drug	Search mode: drug (name search), ndc (NDC lookup), rxcui (RxCUI lookup)
maxResults	integer	No	10	Maximum results (1–50)
includeDailyMed	boolean	No	false	Also fetch DailyMed drug label summaries
ndcCode	string	Only in NDC mode	—	11-digit NDC code (e.g. "00002415013")
rxcuiCode	string	Only in RxCUI mode	—	RxCUI concept ID (e.g. "198440")

* Required only when searchMode is drug.

Example Input

{
  "drugName": "Tylenol",
  "maxResults": 5,
  "includeDailyMed": true
}

Example Output (Dataset)

[
  {
    "rxcui": "198440",
    "name": "Tylenol",
    "synonym": "",
    "tty": "BN",
    "ttyLabel": "Brand Name",
    "nameNormalized": "Acetaminophen",
    "brandNames": ["Tylenol", "Panadol", "Mapap", "Cetafen", "Pharbetol", "CounterAct Pain", "Anacin AF"],
    "ingredients": ["acetaminophen"],
    "doseForms": ["Oral Tablet"],
    "relatedConcepts": [...]
  }
]

Output Keys (KVS)

• OUTPUT — Human-readable formatted summary table
• STATS — Machine-readable statistics (JSON)
• RESULTS / Dataset — Full normalized drug data array

Use Cases

• Pharmacy & EHR software — NDC→RxCUI mapping for medication reconciliation
• Clinical research — Normalize drug names across studies and databases
• Healthcare apps — Brand-to-generic drug lookup for patients
• Drug interaction checkers — Get RxCUI codes needed for interaction APIs
• Supply chain analytics — Cross-reference NDC codes to standard drug concepts
• AI/ML pipelines — Clean drug name features for NLP models

Data Sources

• RxNorm — NIH National Library of Medicine (rxnav.nlm.nih.gov)
• DailyMed — FDA/NLM drug label repository (dailymed.nlm.nih.gov)

Both APIs are free, public, and require no authentication.

Pricing

Pay-per-result: $2.00 per 1,000 results. You only pay for the drug concepts you retrieve.