Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
NCT00554242 · ClinicalTrials.gov registry record · NA
Effect of Grape Seed Extract Plus Ascorbic Acid on Endothelial Function
A NA study, sponsored by Boston University.
- Completed
- Registry status
- NA
- Development phase
- 40
- Enrollment target
NCT00554242: Completed NA study, sponsored by Boston University.
NCT00554242 is a NA study that has completed, run by Boston University. The registered enrollment target is 40 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (97% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00554242, a NA study, has completed, sponsored by Boston University.
- COMPLETED
- Registry status
- NA
- Development phase
- 40 participants
- Enrollment target
Study Summary
A pilot study of 15 subjects will be conducted to confirm an acute effect of grape seed extract on endothelial function. We then will perform a a randomized, double blind, placebo controlled crossover study designed to investigate the benefit of grape seed extract/vitamin C treatment on endothelial function. Participants (n=40) will take a food supplement containing 450 mg of grape seed extract and 1500 mg of vitamin C or matching placebo for four weeks and then cross over to the alternative treatment (active supplement or placebo) for four weeks. We will examine endothelial function before and after each of the two treatment periods. The study will provide information about the vascular effects of these compounds.
Interventions
- DIETARY_SUPPLEMENT Grape seed extract and ascorbic acid
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 40 participants |
| Start Date | 2007-07 |
| Est. Completion | 2008-12 |
| Phase | NA |
What the finished NCT00554242 record still lists
NCT00554242 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 40 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (97% lower).
The record links to 0 conditions, and to 1 intervention - of which Grape seed extract and ascorbic acid is the first listed.
NCT00554242 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00554242 about?
NCT00554242 is a clinical study titled "Effect of Grape Seed Extract Plus Ascorbic Acid on Endothelial Function". A pilot study of 15 subjects will be conducted to confirm an acute effect of grape seed extract on endothelial function. We then will perform a a randomized, double blind, placebo controlled crossover study designed to investigate the benefit of grape seed extract/vitamin C treatment on endothelial ...
What is the current status of trial NCT00554242?
This trial is currently completed. It is a NA study. The enrollment target is 40 participants. The study started on 2007-07. Estimated completion is 2008-12.
What interventions are being tested in trial NCT00554242?
The interventions under investigation include: Grape seed extract and ascorbic acid (DIETARY_SUPPLEMENT).
Who is sponsoring clinical trial NCT00554242?
This trial is sponsored by Boston University, which has 185 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00554242's enrollment target sits among peer trials
40 1447th of 2000 higher than 465 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
Nationwide trials with similar profiles
Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.
Similar enrollment target
- NCT01306019 · 40 participants · Phase 1
Lentiviral Gene Transfer for Treatment of Children Older Than Two Years of Age With X-Linked Severe Combined Immunodeficiency (XSCID)
- NCT01608152 · 40 participants
Development of a Video Game for the Improvement of Outcomes in Stem Cell Transplant Survivors
- NCT01668082 · 40 participants · NA
An Investigation of Brain Tumor Metabolism in Patients Undergoing Surgical Resection
- NCT02015013 · 40 participants · Phase 2
Hematopoietic Stem Cell Mobilization in Idiopathic CD4 Lymphocytopenia Patients and Healthy Controls for the Study of T Cell Maturation and Trafficking in Murine Models
Similar registry start date
- NCT05988463 · started 2027-01-01 · Phase 1
Dose-Escalation Study of Artesunate Patients With IPF
- NCT07219706 · started 2026-12-10 · NA
Dietary Fiber and Time Restricted Eating
- NCT02831335 · started 2026-12-01
Technical Development of Multi-Parametric Renocerebral MRI
- NCT05962346 · started 2026-12 · NA
Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia