Grape seed extract may tame High-Normal blood pressure
NCT ID NCT07090876
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether a grape seed extract can lower blood pressure in 60 adults with high-normal blood pressure (130-139/85-89 mmHg). Participants will take either the extract or a placebo for 8 weeks, while following a low-sodium Mediterranean diet. The main goal is to see if the extract reduces systolic blood pressure more than the placebo.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 60 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2026
- Expected to finish
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Jan 2027
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 70 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Male or female subjects aged ≥18 and ≤70 years; * Subjects with high-normal blood pressure levels, defined as SBP 130-139 mmHg and/or DBP 85-89 mmHg (according to ESH criteria); * Subjects with an estimated 10-year CVD risk \<10% (as per the SCORE risk prediction algorithm of the European Society of Cardiology); * Subjects capable of communicating, making themselves understood, and complying with the study requirements; * Subjects who agree to participate in the study and have dated and signed the informed consent form. Exclusion Criteria: * Treatment with direct vasodilator drugs or supplements known to affect blood pressure levels; * Chronic pharmacological treatments for any clinical condition not stabilized for at least 3 months; * Known thyroid, renal, or hepatic dysfunction (including transaminase levels ≥3 times the upper limit of normal \[ULN\]); * Current or past history of alcohol abuse; * Pregnancy or breastfeeding; * Known intolerance or hypersensitivity to the active ingredients of the investigational dietary supplement; * History or clinical evidence of any significant concomitant disease that could compromise subject safety or the ability to complete the study.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Cardiovascular Internal Medicine Unit, IRCCS University Hospital of Bologna, Bologna, Italy
RECRUITINGBologna, Bo, 40100, Italy
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