RxNorm: related concepts

Navigate the RxNorm graph from an RXCUI — ingredient (IN) ↔ brand name (BN) ↔ clinical/branded drug (SCD/SBD) ↔ dose form (DF).

How to use

Optionally filter to term types with `ttys` (e.g. "IN+BN", "SCD+SBD"). Omit for all related.

Parameters

Name	Type		Description
rxcui	string	required	The RxNorm concept id.
ttys	string	optional	Term-type filter, "+"-joined.
prescribableOnly	boolean	optional	Default false.

Example input

{
  "rxcui": "29046",
  "ttys": "IN+BN"
}

Example output

{
  "rxcui": "29046",
  "groups": [
    {
      "tty": "IN",
      "concepts": [
        {
          "rxcui": "29046",
          "name": "lisinopril",
          "tty": "IN"
        }
      ]
    },
    {
      "tty": "BN",
      "concepts": [
        {
          "rxcui": "203644",
          "name": "Prinivil",
          "tty": "BN"
        },
        {
          "rxcui": "153077",
          "name": "Zestril",
          "tty": "BN"
        }
      ]
    }
  ]
}

Call it (MCP tools/call)

{
  "method": "tools/call",
  "params": {
    "name": "rxnorm_get_related",
    "arguments": {
      "rxcui": "29046",
      "ttys": "IN+BN"
    }
  }
}

Endpoint: POST https://clinical-mcp.mcharge.in/mcp (Streamable HTTP).