---
title: ToolRouter — Use Case
description: Step-by-step guide for a real-world ToolRouter use case with agent-specific instructions.
url: https://toolrouter.com/tools/drug-info/use-cases/research-side-effects
---
# Research Drug Side Effects

Package inserts list every side effect reported in clinical trials, but they do not tell you which ones are common in practice. The FDA Adverse Event Reporting System captures real-world reports from patients and healthcare providers, painting a more practical picture of what people actually experience.

The check_adverse_events skill queries this database, returning the most frequently reported adverse events for a given drug. You see what real patients report -- not just what appeared in controlled trials.

Patients researching a new prescription, journalists investigating drug safety, and developers building health information tools all benefit from programmatic access to adverse event data. The data is public but hard to query manually -- this skill makes it accessible in seconds.

**Tool:** [Drug Info](https://toolrouter.com/tools/drug-info)
**Skills:** check_adverse_events

## Agent Guides

- [How to Research Side Effects with Claude](https://toolrouter.com/tools/drug-info/use-cases/research-side-effects/claude): Guide for Claude
- [How to Research Side Effects with ChatGPT](https://toolrouter.com/tools/drug-info/use-cases/research-side-effects/chatgpt): Guide for ChatGPT
- [How to Research Side Effects with Copilot](https://toolrouter.com/tools/drug-info/use-cases/research-side-effects/copilot): Guide for Copilot
- [How to Research Side Effects with OpenClaw](https://toolrouter.com/tools/drug-info/use-cases/research-side-effects/openclaw): Guide for OpenClaw
