What is the lethal dowes of Visine that will kill a person?

Visine contains the active ingredient tetrahydrozoline, which is an eye drop solution that can be toxic in high doses. While there is no established "lethal dose," ingestion of even small amounts can lead to serious health issues or death, particularly in children. Cases of overdose have been reported with doses as low as 1-2 mL. It is crucial to seek immediate medical attention if ingestion occurs.