Somato® (Phytomelatonin) Versus Synthetic Melatonin and Placebo on Sleep Quality

June 25, 2026 updated by: Nutraland USA, Inc.

Sleep Solutions in Focus: A Randomized Comparison of Phytomelatonin (Somato®), Synthetic Melatonin, and Placebo

This study examines the effects of a plant-based phytomelatonin supplement compared to synthetic melatonin and placebo in adults with suboptimal sleep quality. The research uses a randomized, double-blind, placebo-controlled, three-arm clinical trial design. The primary aim is to determine whether phytomelatonin improves sleep outcomes compared to placebo and whether it matches or exceeds synthetic melatonin. Participants will be randomly assigned to receive 2 mg phytomelatonin, 10 mg synthetic melatonin, or an inactive placebo. Each participant will take one capsule nightly for 28 days. Objective sleep metrics will be captured continuously using the Oura Ring wearable device. Subjective outcomes will be measured at baseline and post-intervention using validated surveys such as the Pittsburgh Sleep Quality Index and the SF-36. Weekly visual analog scales will assess morning grogginess. Safety, tolerability, and user experience differences between groups will also be evaluated.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
244

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Delaware
      • Wilmington, Delaware, United States, 19808
        • N/A Decentralized Trial - address for CRO headquarters, not the study location

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Device Compliance: Willingness to consistently wear an Oura Ring Gen3 and maintain an active membership throughout the study duration.
  • Baseline Sleep Score: A baseline Oura sleep score of less than 75, indicating sub-optimal sleep quality.
  • Oura Ring Usage History: Demonstrated at least 80% adherence to Oura Ring use during the 30 days prior to enrollment.
  • Health and Supplement Stability: No significant changes in dietary supplement use or medical history within the past 30 days, to ensure stability in baseline physiological and health conditions.

Exclusion Criteria:

  • Current or recent use (within the past 30 days) of any sleep-promoting dietary supplement.
  • Current or recent use (within the past 30 days) of any sleep-promoting medications, whether prescription or over-the-counter.
  • Pregnant or breastfeeding women will be excluded from the study.
  • Substance Use Disorder: Individuals with a history of drug or alcohol dependency who have not maintained sobriety for a minimum of the past 12 months.
  • Severe Medical Conditions: Presence of severe or unstable medical conditions that may interfere with study participation or outcomes.
  • Use of Mood-Affecting Medications: Use of any medications known to significantly influence mood, circadian rhythms, or melatonin pathways.
  • Sensitivity to Nightshades: Known sensitivity or allergy to nightshade plants, including tomatoes, due to the nature of the study intervention.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Placebo Comparator: Placebo
Dietary supplement: Placebo
Placebo capsule
Active Comparator: Synthetic Melatonin
Synthetic Melatonin - 10mg
Dietary supplement: Melatonin
10mg Synthetic Melatonin capsule
Other Names:
  • Synthetic melatonin
Experimental: Somato®
Somato® Phytomelatonin 2mg
Dietary supplement: Plant-based melatonin
2mg Phytomelatonin (plant-based melatonin from tomatoes) capsule
Other Names:
  • Somato®
  • Phytomelatonin

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Change from Baseline Pittsburgh Sleep Quality Index (PSQI) Global Score at Day 28
Time Frame: Baseline (Day 0) and Day 28
The PSQI is a self-administered questionnaire used to measure sleep quality and disturbances over a 1-month time interval. The questionnaire consists of 19 individual items, creating 7 component scores that are summed to yield one global score. The total score ranges from 0 to 21, where lower scores denote better sleep quality.
Baseline (Day 0) and Day 28

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change from Baseline Objective Sleep Efficiency at Day 28
Time Frame: Baseline (Day 0) and Day 28
Sleep efficiency percentage as measured continuously via the Oura Ring 3.0 wearable device. Calculated as the percentage of time in bed spent asleep.
Baseline (Day 0) and Day 28
Change from Baseline Objective Total Sleep Time at Day 28
Time Frame: Baseline (Day 0) and Day 28
Total accumulated sleep duration in minutes per night, measured continuously via the Oura Ring 3.0 wearable device.
Baseline (Day 0) and Day 28
Change from Baseline Objective Sleep Latency at Day 28
Time Frame: Baseline (Day 0) and Day 28
The time taken to transition from full wakefulness to sleep in minutes, measured continuously via the Oura Ring 3.0 wearable device.
Baseline (Day 0) and Day 28
Change from Baseline Objective REM Sleep Duration at Day 28
Time Frame: Baseline (Day 0) and Day 28
Total duration of Rapid Eye Movement (REM) sleep in minutes per night, measured continuously via the Oura Ring 3.0 wearable device.
Baseline (Day 0) and Day 28
Change from Baseline Objective Deep Sleep Duration at Day 28
Time Frame: Baseline (Day 0) and Day 28
Total duration of Deep (slow-wave) sleep in minutes per night, measured continuously via the Oura Ring 3.0 wearable device.
Baseline (Day 0) and Day 28
Change from Baseline Objective Light Sleep Duration at Day 28
Time Frame: Baseline (Day 0) and Day 28
Total duration of Light sleep in minutes per night, measured continuously via the Oura Ring 3.0 wearable device.
Baseline (Day 0) and Day 28
Change from Baseline Nocturnal Resting Heart Rate at Day 28
Time Frame: Baseline (Day 0) and Day 28
Average overnight resting heart rate in beats per minute (bpm), measured continuously via the Oura Ring 3.0 wearable device.
Baseline (Day 0) and Day 28
Change from Baseline Nocturnal Heart Rate Variability (HRV) at Day 28
Time Frame: Baseline (Day 0) and Day 28
Overnight Heart Rate Variability (HRV) in milliseconds (ms) using the rMSSD (Root Mean Square of Successive Differences) method, measured continuously via the Oura Ring 3.0 wearable device.
Baseline (Day 0) and Day 28

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change from Baseline 36-Item Short-Form Health Survey (SF-36) Score at Day 28
Time Frame: Baseline (Day 0) and Day 28
The SF-36 is a multi-purpose, short-form health survey. Scored from 0 to 100, where higher scores mean better health outcomes.
Baseline (Day 0) and Day 28
Change from Baseline Morning Functioning Visual Analogue Scale (VAS) Composite Score at Day 28
Time Frame: Baseline (Day 0) and Day 28
Morning functioning assessed via a 6-item questionnaire utilizing a Visual Analogue Scale. Items measure dimensions such as grogginess, sleepiness, difficulty concentrating, alertness, feeling refreshed, and readiness for the day. Individual items are directionally aligned and averaged to create a composite score ranging from 1 to 10, where higher scores represent better morning functioning.
Baseline (Day 0) and Day 28
Change from Baseline in Pittsburgh Sleep Quality Index (PSQI) Sub-component Scores at Day 28
Time Frame: Baseline (Day 0) to Day 28
The Pittsburgh Sleep Quality Index (PSQI) is a 19-item self-reported questionnaire that evaluates subjective sleep quality changes from baseline. Each component is scored on a Likert scale ranging from 0 to 3, where higher scores reflect a greater severity of sleep difficulties within that specific domain.
Baseline (Day 0) to Day 28

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Nutraland USA, Inc.

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Reputable Health

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 13, 2026

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 17, 2026

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 17, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 3, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 22, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 25, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 30, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 25, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • BB2512MD-154

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings