Effects of Seed Cycling Capsules on Premenstrual Syndrome Symptoms and Menstrual Cycle Length

June 15, 2026 updated by: Superlune Inc. d/b/a Two Moons Health
This virtual, single-arm clinical trial will evaluate the effects of Seed Cycling Capsules on symptoms associated with premenstrual syndrome (PMS) and menstrual cycle characteristics. Forty female participants aged 18 to 45 years will use the study products daily for two menstrual cycles. Participants will complete questionnaires at baseline, at the end of their period during Cycle 1, and at the end of their period during Cycle 2.

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.
40

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
    • Nevada
      • Las Vegas, Nevada, United States, 89118
        • Citruslabs

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

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Be female.
  • Be 18-45 years of age.
  • Have experienced at least five of the following symptoms during the last three menstrual cycles:

Heavy flow Prolonged, shortened, or irregular periods Headaches or migraines Low mood Fatigue Bloating Premenstrual or menstrual cramps Breast tenderness Poor sleep Constipation or diarrhea Weight gain or fluctuations Irritability or anger Sick days or reduced social activity due to menstrual symptoms Hormonal acne

  • Be generally healthy.
  • Have a menstrual cycle length between 23 and 35 days.
  • Track menstrual cycles and be able to predict period dates.
  • Be willing to refrain from taking products, medications, or supplements targeting menstrual health during the study.

Exclusion Criteria:

  • Use of hormonal contraception.
  • Allergy to sesame.
  • Chronic conditions that would interfere with study participation, including oncological and psychiatric disorders.
  • Pregnant, breastfeeding, or trying to conceive.
  • Unwillingness to follow the protocol.
  • Menopause or menopausal symptoms.
  • Recent or planned invasive medical procedures.
  • History of substance abuse.
  • Diabetes or other endocrine-related conditions.
  • Current or planned participation in another research study.
  • Use of hormone-modulating medications or therapies.
  • Planned insertion or replacement of an IUD within 12 weeks.
  • Diagnosis of endometriosis, polycystic ovary syndrome (PCOS), or adenomyosis.

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

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.
Experimental: Seed Cycling Capsules
Participants will take Two Moons Seed Cycling Capsules daily for two menstrual cycles.
Dietary supplement: Two Moons Seed Cycling Capsules
Participants will take Two Moons Seed Cycling Capsules daily for two menstrual cycles. Participants will take two capsules with the first meal of the day according to the following schedule: Zest Capsules from Days 1-14 of the cycle, and Zen Capsules from Days 15-28 of the cycle. Participants will continue this schedule for two menstrual cycles regardless of when subsequent menstrual periods occur.

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 in Menstrual Cramp Severity
Time Frame: Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Self-reported severity of premenstrual and menstrual cramps assessed using study questionnaires and compared between Baseline, Cycle 1, and Cycle 2.
Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Change in Bloating Severity
Time Frame: Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Self-reported severity of abdominal bloating associated with the menstrual cycle assessed using study questionnaires.
Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Change in Fatigue Severity
Time Frame: Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Self-reported fatigue associated with the menstrual cycle assessed using study questionnaires.
Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Change in Hormonal Acne Severity
Time Frame: Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Self-reported severity and frequency of hormonal acne symptoms assessed using study questionnaires.
Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Change in Mood Symptoms
Time Frame: Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Self-reported mood-related symptoms including low mood, irritability, and anger associated with the menstrual cycle.
Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Change in Sleep Quality
Time Frame: Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Self-reported sleep quality and insomnia symptoms associated with the menstrual cycle.
Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Change in Breast Tenderness Severity
Time Frame: Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Self-reported breast tenderness associated with the menstrual cycle.
Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Change in Libido
Time Frame: Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Self-reported sex drive and libido associated with the menstrual cycle.
Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)

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
Participant Assessment of Overall Menstrual Experience
Time Frame: Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Participant-reported assessment of the overall effect of the study product on menstrual health and menstrual cycle experience.
Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Participant Satisfaction With Seed Cycling Capsules
Time Frame: Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Participant-reported satisfaction with the study product following use during the study period.
Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Participant Perception of Product Effectiveness
Time Frame: Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)
Participant-reported perception of the effectiveness of the study product in improving menstrual symptoms.
Day 28 (end of first 28-day intervention cycle), and Day 56 (end of second 28-day intervention cycle)

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.
Superlune Inc. d/b/a Two Moons Health

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.
Citruslabs

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.
July 8, 2025

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.
September 27, 2025

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.
September 27, 2025

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).
June 9, 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 15, 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 17, 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 17, 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 15, 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

Keywords

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.
  • #20756

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.

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