Nitric oxide trial to shield hospital staff from COVID-19 falls short
NCT ID NCT04312243
First seen Jan 08, 2026 · Last updated May 31, 2026 · Updated 16 times
Summary
This study aimed to see if breathing in nitric oxide gas could protect healthcare workers from catching COVID-19 while caring for infected patients. It planned to enroll 470 participants but was stopped early with only 24 people. The trial compared those who inhaled the gas to those who did not, measuring how many got infected. Because it ended early, we cannot draw firm conclusions about its effectiveness.
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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Locations
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Massachusetts General Hospital
Boston, Massachusetts, 02114, United States
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