How to Use the NLM RxNorm (Drug Database) MCP in Claude Code

Q: How do I install the NLM RxNorm (Drug Database) in Claude Code?

Run claude mcp add --transport http nlm-rxnorm -- in your terminal. This command registers the MCP Server in your /.claude.json configuration file for immediate CLI use.

Q: Can Claude Code map brand names to active ingredients?

Yes. Claude Code uses getallrelatedinfo and getrelatedbyrelationship to find the active ingredients associated with any brand name RxCUI directly from your terminal.

Query RxNorm drug concepts, resolve NDC codes, and inspect clinical classes directly from your terminal using Claude Code.

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Connect NLM RxNorm (Drug Database) MCP to Claude Code

Create your Vinkius account to connect NLM RxNorm (Drug Database) to Claude Code and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup NLM RxNorm (Drug Database) with Claude Code

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Run terminal-based NDC lookups

Claude Code brings clinical drug databases directly into your terminal workflow. You can pipe a list of National Drug Codes from a text file into the CLI. The agent will run `get_ndc_properties` and `get_ndc_status` to verify their validity and pull manufacturer details. This makes command-line data validation fast. The agent uses `find_related_ndcs` to find associated package codes and outputs the results directly to stdout, letting you redirect the data into local JSON or CSV files.

Chain RxNorm MCP Server queries in your shell

The terminal agent makes it easy to inspect complex drug hierarchies. Claude Code uses this MCP Server to run `get_class_by_rxnorm_drug_id` and `get_class_members` to map out drug classes without opening a browser or writing custom API scripts. You can ask the agent to find all medications in a specific class. It queries the NIH database, extracts the RxCUIs, and formats them as a clean list in your terminal window, ready for your next shell command.

Map drug names and synonyms

Claude Code handles spelling errors and brand mapping directly from the CLI. It uses `get_spelling_suggestions` and `get_approximate_match` to resolve typos in drug names, returning the correct RxCUI instantly. Once the correct concept is found, the agent calls `get_all_rxterm_info` and `get_rxterm_display_name` to pull consumer-friendly names, strengths, and routes. It prints these details in a clean terminal layout.

Setup guide

Set up NLM RxNorm (Drug Database) MCP in Claude Code

Prerequisites

Claude Code CLI installed (npm install -g @anthropic-ai/claude-code)
Active Vinkius subscription with a valid endpoint token

1

Run the add command

Open your terminal and run the command shown on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com. Use --scope user to make it available across all projects.
2

Verify the connection

Start a Claude Code session and type /mcp to list connected servers. You should see nlm-rxnorm-drug-database-mcp with a green status indicator.
3

Start using tools

Ask Claude Code something like "Check my latest NLM RxNorm (Drug Database) transactions." It will automatically discover and invoke the available NLM RxNorm (Drug Database) tools.

Terminal

claude mcp add --transport http nlm-rxnorm-drug-database-mcp https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

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Prerequisites

Claude Code CLI installed
Active Vinkius subscription with a valid endpoint token

1

Open the config file

Create or edit .mcp.json in your project root for project-level scope, or ~/.claude.json for user-level scope.
2

Add the NLM RxNorm (Drug Database) MCP

Paste the JSON snippet shown on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Code

Start a new Claude Code session. Type /mcp to confirm the server is connected. The tools will be automatically available in your conversation.

.mcp.json

{
  "mcpServers": {
    "nlm-rxnorm-drug-database-mcp": {
      "type": "url",
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by NLM RxNorm. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about NLM RxNorm (Drug Database) MCP in Claude Code

You can ask Claude Code directly in your terminal to find a drug. The agent uses `find_rxcui_by_string` and `get_all_properties` to pull the drug's metadata and prints it to your console.

Yes. You can pipe a list of NDCs into Claude Code and ask it to run `get_ndc_properties` for each one. The agent will output the parsed drug details directly to your terminal.

Run `claude mcp add --transport http nlm-rxnorm -- ` in your terminal. This command registers the MCP Server in your `~/.claude.json` configuration file for immediate CLI use.

Yes. Claude Code uses `get_all_related_info` and `get_related_by_relationship` to find the active ingredients associated with any brand name RxCUI directly from your terminal.

All drug names, RxCUIs, and NDC codes are processed locally or sent directly to the sandboxed Vinkius engine. No search queries are stored, cached, or used for model training, keeping your clinical lookup history secure.

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