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Fish waste vitamin d put to the test against synthetic supplements

NCT ID NCT07127796

Knowledge-focused Sponsor: University of Bologna Source: ClinicalTrials.gov ↗

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests whether vitamin D extracted from fish waste is as effective as synthetic vitamin D at raising blood levels in healthy adults with mild deficiency. 48 participants will take either fish-derived or synthetic vitamin D daily for 3 months. The goal is to see if a sustainable, natural source can match the standard supplement.

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 48 people

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

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Sep 2027

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

18 to 60 years

Sex

Anyone

Healthy volunteers

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

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 aged ≥ 18 years and ≤ 60 years old * Vitamin D plasma level between 20 and 40 ng/mL * Subjects who have the capability to communicate, to make themselves understood, and to comply with the study's requirements * Subjects agree to participate in the study and having dated and signed the informed consent form Exclusion Criteria: * Intake of dietary supplements or drugs containing Vitamin D * Diagnosis of osteopenia/osteoporosis, rheumatological diseases, history of non-traumatic bone fractures * Known diagnosis of hyperparathyroidism, hypercalcemia, severe renal failure (eGFR\<30 mg/dL) Known intolerance or allergy to fish or fish derived products * Any preventive treatments (i.e. hypocholesterolemics, antihypertensives) not stabilized in type and dose for at least 3 months * Active pregnancy or lactation * Any medical or surgical condition that would limit the patient adhesion to the study protocol

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Conditions

The condition(s) this trial relates to.

vitamin D deficiency

As listed by the trial registrant

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

Dietary supplement Vitamin D

How to take part

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

  1. 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 ↗

  2. A doctor treating you

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