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Grape study reveals how your body handles tartaric acid

NCT ID NCT07394101

Knowledge-focused Sponsor: Fundacion Clinic per a la Recerca Biomédica Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at how tartaric acid, a natural compound in wine, grapes, and grape juice, is absorbed and processed by the body. Thirty healthy, non-smoking adults aged 20-40 will consume each food source separately, then provide blood and urine samples over 24 hours. The goal is to see if the food matrix affects how much tartaric acid enters the bloodstream. This is an observational study, not a treatment for any disease.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

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

About 30 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

May 2026

An estimate. End dates often move.

Lead sponsor

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

20 to 40 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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: * Healthy non-smoking adults aged 20-40 years. * Body mass index (BMI) between 23 and 27 kg/m². * No history of cardiovascular, hepatic, or renal disease. * No adherence to any special diet for at least 4 weeks prior to the study. * Willing and able to provide written informed consent. Exclusion Criteria: * Current smokers or recent ex-smokers. * History of cardiovascular, hepatic, or renal disorders. * Current adherence to any special diet or nutritional supplementation that could affect study outcomes. * Any condition or medication that could interfere with absorption, metabolism, or excretion of tartaric acid. * Participation in another clinical trial within the past 3 months. * Pregnancy or lactation.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Healthy adult participants Non-smoking, healthy adults Normal weight adults

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Department of Internal Medicine, Hospital Clínic, Institut d'Investigació Biomèdica August Pi i Sunyer

    Barcelona, Barcelona, 08036, Spain

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