Could a simple gas stop COVID-19 from getting worse?

NCT ID NCT04305457

First seen Jan 07, 2026 · Last updated May 11, 2026 · Updated 18 times

Summary

This study tested whether breathing in nitric oxide gas could prevent mild or moderate COVID-19 from becoming severe in hospitalized adults. Researchers aimed to see if the treatment reduced the need for breathing machines. The trial was stopped early after enrolling 62 people.

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Contacts and locations

Locations

  • Louisiana State University Health Shreveport

    Shreveport, Louisiana, 71103, United States

  • Massachusetts General Hospital

    Boston, Massachusetts, 02114-2621, United States

Conditions

Explore the condition pages connected to this study.