Eye vitamin trial seeks 60 volunteers for Six-Month crossover study
NCT ID NCT06965426
First seen Jun 27, 2026 · Last updated Sep 02, 2026 · Updated 2 times
Summary
This study looks at whether taking a supplement containing lutein, zeaxanthin, and meso-zeaxanthin can increase carotenoid levels in the skin, which may be linked to eye health. About 60 adults aged 18 to 50 will be randomly assigned to receive the supplement or a placebo for 12 weeks, then switch to the other option for another 12 weeks. The goal is to see if the supplement changes skin carotenoid scores compared to 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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Jun 2025
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
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 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Adult patients 18-50 years old of any sex and any race. * Willing to comply with the protocol instructions. * Has read (or has had read to), understood, and signed an Informed Consent. Exclusion Criteria: * Current Smoker * Pregnant, plan to become pregnant or breastfeeding * History of any non-controlled disease states including diabetes, cancer, heart diseases ETC (we need to confirm this with previous protocols) BMI greater than 30 * Currently taking MacuHealth or similar supplements or previous use
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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.
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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Vision Source
RECRUITINGKansas City, Missouri, 64111, United States
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