Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
NCT04775654 · ClinicalTrials.gov registry record · NA
The Effects of Blackcurrant Supplementation on Eye Health
A NA study, sponsored by Nutraceuticals Research Institute.
- Completed
- Registry status
- NA
- Development phase
- 57
- Enrollment target
NCT04775654: Completed NA study, sponsored by Nutraceuticals Research Institute.
NCT04775654 is a NA study that has completed, run by Nutraceuticals Research Institute. The registered enrollment target is 57 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (96% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04775654, a NA study, has completed, sponsored by Nutraceuticals Research Institute.
- COMPLETED
- Registry status
- NA
- Development phase
- 57 participants
- Enrollment target
Study Summary
The purpose of this study is to evaluate the potential for supplementation with black currant to support eye health among otherwise healthy adult women who spend 6+ hours per day using digital screens.
Primary Outcome
The Ocular Discomfort scale is a validated self reported instrument assessing ocular discomfort symptoms. The scale contains 6 domains with a combination of likert scale (ranging from 1-7) and dichotomous (yes/no) questions. Higher scores indicate greater visual fatigue.
Interventions
- OTHER Placebo
- DIETARY_SUPPLEMENT Blackcurrant
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 57 participants |
| Start Date | 2021-03-01 |
| Est. Completion | 2021-12-31 |
| Phase | NA |
What the finished NCT04775654 record still lists
NCT04775654 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 57 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (96% lower).
The record links to 0 conditions, and to 2 interventions - of which Placebo is the first listed.
NCT04775654 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04775654 about?
NCT04775654 is a clinical study titled "The Effects of Blackcurrant Supplementation on Eye Health". The purpose of this study is to evaluate the potential for supplementation with black currant to support eye health among otherwise healthy adult women who spend 6+ hours per day using digital screens.
What is the current status of trial NCT04775654?
This trial is currently completed. It is a NA study. The enrollment target is 57 participants. The study started on 2021-03-01. Estimated completion is 2021-12-31.
What interventions are being tested in trial NCT04775654?
The interventions under investigation include: Placebo (OTHER), Blackcurrant (DIETARY_SUPPLEMENT).
Who is sponsoring clinical trial NCT04775654?
This trial is sponsored by Nutraceuticals Research Institute, which has 15 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04775654's enrollment target sits among peer trials
57 1261st of 2000 higher than 739 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
- NCT03521830 · 57 participants · Phase 2
Nivolumab Alone or Plus Relatlimab or Ipilimumab for Patients With Locally-Advanced Unresectable or Metastatic Basal Cell Carcinoma
- NCT03587701 · 57 participants · Phase 2
Effects of Anakinra in Subjects With Corticosteroid-resistant/Intolerant Meniere's Disease and Autoimmune Inner Ear Disease
- NCT04104126 · 57 participants · NA
Blood Flow Restriction Therapy in Achilles Injury
- NCT04703842 · 57 participants · Phase 1
Modulation of SERCA2a of Intra-myocytic Calcium Trafficking in Heart Failure With Reduced Ejection Fraction
Similar registry start date
- NCT05962346 · started 2026-12 · NA
Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia
- NCT07125183 · started 2026-12 · Phase 2
Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma
- NCT07292298 · started 2026-11 · Phase 2
Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates
- NCT04263285 · started 2026-10 · NA
Treatment of Depression Post-SCI