Heart health: do everyday supplements lower blood pressure?
NCT ID NCT01653678
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether taking daily vitamin D and omega-3 (fish oil) supplements can help prevent high blood pressure or lower it in healthy adults. Over 25,000 people are taking part, with a smaller group having their blood pressure monitored around the clock. The goal is to see if these common supplements make a real difference for heart health.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Vitamin D3 (cholecalciferol) and omega-3 fatty acids (fish oil)
What this could lead to
If it works, this could show that simple, affordable supplements help manage blood pressure and reduce the risk of hypertension.
What could go wrong
This is an observational analysis within a larger trial, not a dedicated treatment study. Results may be modest or not apply to everyone.
Disclaimer
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This is a summary of
the original study
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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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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Brigham and Women's Hospital
Boston, Massachusetts, 02215, United States