Drug name normalization (RxNorm) API

Normalize a messy drug name to its standard RxNorm concept (NIH/NLM) and surface its active ingredients and brand names. Maps brand↔generic and resolves typos via approximate matching. Answers 'what is the generic for Tylenol', 'active ingredient in Advil', 'brand names for ibuprofen', 'normalize this drug name', 'RxNorm code for X'.

Price$0.01per request

MethodPOST

Route/v1/science/drug

StatusLive

MIME typeapplication/json

Rate limit60/minute

Cache86400s public

sciencedrugrxnormmedicationpharmacyingredientbrand-namehealthnlm

API URLhttps://x402.hexl.dev/v1/science/drug

Integration docs

Example request

{
  "name": "Tylenol"
}

Example response

{
  "query": "Tylenol",
  "rxcui": "202433",
  "name": "Tylenol",
  "termType": "BN",
  "ingredients": [
    "acetaminophen"
  ],
  "brandNames": [
    "Tylenol"
  ]
}

Input schema

{
  "type": "object",
  "required": [
    "name"
  ],
  "properties": {
    "name": {
      "type": "string",
      "examples": [
        "Tylenol"
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}