Effects of citrus extract on sleep and mental wellbeing

The Effect of Citrus Extract on Sleep and Mental Wellbeing

NA · Maastricht University Medical Center · NCT06239168

This study is testing if taking citrus extract every day can help healthy people with minor sleep problems feel better and sleep more soundly.

Quick facts

PhaseNA
Study typeInterventional
Enrollment40 (estimated)
Ages40 Years to 70 Years
SexAll
SponsorMaastricht University Medical Center (other)
Locations1 site (Maastricht)
Trial IDNCT06239168 on ClinicalTrials.gov

What this trial studies

This trial investigates the impact of daily citrus extract administration on sleep quality and mental wellbeing in healthy individuals experiencing minor sleep disturbances. It employs a randomized, double-blind, placebo-controlled, cross-over design to ensure robust results. Participants will alternate between receiving the citrus extract and a placebo, allowing for direct comparison of effects. The study aims to fill the gap in human evidence regarding the benefits of citrus extract for sleep-related issues.

Who should consider this trial

Good fit: Ideal candidates are healthy individuals aged 40-70 with minor sleep disturbances and a BMI between 18.5 and 30 kg/m2.

Not a fit: Patients with chronic sleep disorders or major psychiatric conditions are unlikely to benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a natural and effective intervention for improving sleep quality and mental wellbeing.

How similar studies have performed: While pre-clinical studies have shown promise, human studies on citrus extract's effects on sleep are limited, making this approach relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Healthy individuals with (minor) sleep disturbance
* Age 40-70 years
* BMI 18.5 - 30 kg/m2
* Willingness to give up being a blood donor from 4 weeks before the start of the study, during the study and for 4 weeks after completion of the study

Exclusion Criteria:

* Excessive caffeine use
* Major psychiatric/mental health disorders .
* Chronic sleep disorders
* Severe sleep disturbance for more than 1 year
* Other clear causes for poor sleep quality or mental wellbeing
* Use of medication or supplements that can affect outcomes
* Nonpharmacological treatment for sleep disorders
* Flight from a time-zone with \>3 h difference ≤1 week before an intervention period
* Administration of investigational drugs or participation in any scientific intervention study which may interfere with this study
* Use of pre-, pro- or synbiotics within 1 month prior to the start of the study
* Reported weight loss or weight gain of \>3 kg in the month prior to pre-study screening
* Smoking
* Abuse of products
* Known allergy to citruses
* Known pregnancy or lactation

Where this trial is running

Maastricht

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Sleep Disturbance

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.