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Can a new formula make omega-3 and vitamin D3 supplements work better?

NCT ID NCT07791797

Knowledge-focused Sponsor: RDC Clinical Pty Ltd Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 28, 2026 · Last updated Aug 28, 2026

Summary

This trial tests whether specially formulated omega-3 and vitamin D3 supplements are absorbed better than standard versions. Healthy adults aged 18 and older take either a single dose of omega-3 or daily vitamin D3 for up to 6 weeks. Researchers measure nutrient levels in the blood to compare absorption between the formulations.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Omega-3 and vitamin D3 supplements, with and without absorption-enhancing technology
What this could lead to
If the enhanced versions absorb better, they could make everyday supplements more effective for boosting nutrient levels.
What could go wrong
This is an early, small study in healthy people, so results may not apply to everyone. Absorption differences may be small or not clinically meaningful.

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

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 160 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

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

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.

Part A: Inclusion Criteria: * Adults 18 years and older * Generally healthy * BMI 18.5-29.9 kg/m2 * Able to provide informed consent * Agree to not participate in another clinical trial while enrolled in this trial * Agree not to change current diet and/or exercise frequency or intensity during entire study period * Participant's ability to participate fully and comply with demands of the study including attendance at all scheduled blood collection time points Exclusion Criteria: * Have a serious illness e.g. mood disorders such as depression, anxiety or bipolar disorder, neurological disorders such as MS, kidney disease, liver disease or heart conditions * Have an unstable illness e.g. diabetes and thyroid gland dysfunction * Current malignancy (excluding Basal Cell Carcinoma) or chemotherapy or radiotherapy treatment for malignancy within the previous 2 years * Significant change in diet in the past 1-month (e.g., removal of a food group or calorie restriction) * Active smokers, nicotine use or drug (prescription or illegal substances) abuse * Chronic past and/or current alcohol use (\>21 alcoholic drinks week) * Pregnant or lactating women * Allergic to any of the ingredients in enhanced or standard formula * Participants who are currently participating in any other clinical trial or who have participated in any other clinical trial during the past 1 month (excluding RDC Clinical trials) * Any condition which in the opinion of the investigator makes the participant unsuitable for inclusion * Regular use within the past 4 weeks of supplements containing the trial product Part B: The above criteria apply, plus baseline serum 25(OH)D \<20.0 ng/mL (\<50.0 nm/L)

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As listed by the trial registrant

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

Healthy volunteer

How to take part

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

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

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

  3. 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 ↗

  4. 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

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • RDC Clinical

    Fortitude Valley, Queensland, 4006, Australia

    Contact Email: •••••@•••••

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