# Coding drug information with WHODrug

How to code drug information with WHODrug:

1. When coding to WHODrug in VigiFlow, you can search for both trade names and active substances in the field *Drug name*. A drop-down list appears with results matching the search. You can also click the icon on the right of the field to access the more detailed WHODrug search, where you can see additional information such as MAH and dose forms.
2. If you are unable to find the correct match for your search or if you have information to add, use the field *Drug name as reported by initial reporte*r.

{% hint style="warning" %}
If you can’t find a specific pharmaceutical product in WHODrug, [contact UMC](mailto:support@who-umc.org) to suggest its inclusion in the dictionary.
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://support.who-umc.org/vigiflow/entering-and-structuring-data-in-reports/coding-drug-information-with-whodrug.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
