Investigational drugs or devices are medical treatments that are still being studied in clinical trials. They have not yet been approved for public use by government agencies like the FDA.

Examples:

• A new cancer drug being tested for the first time
• A new type of insulin pump that needs real-world testing
• A surgical device that hasn’t been approved for use yet

These treatments are only available to people in specific trials. They are tested under close supervision, and their safety and effectiveness are still being evaluated.