Vitamin d trial tests if daily pills can tame COVID-19 and shield families
NCT ID NCT04536298
First seen Nov 01, 2025 · Last updated May 15, 2026 · Updated 24 times
Summary
This study tested whether taking a daily vitamin D3 supplement for 4 weeks could help people recently diagnosed with COVID-19 feel less sick and avoid needing doctor visits or hospital care. It also looked at whether the same supplement could protect their household members from catching the virus. Over 2,000 adults from the U.S. and Mongolia took part, with half receiving vitamin D and half receiving a placebo (a dummy pill).
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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.
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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Brigham and Women's Hospital
Boston, Massachusetts, 02215, United States
Conditions
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