UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000058569
Receipt number R000066972
Scientific Title A study to verify the alleviation effect on menstrual pain: a randomized, placebo-controlled, double-blind, parallel-group comparison study
Date of disclosure of the study information 2026/07/23
Last modified on 2025/11/06 12:05:47

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Basic information

Public title

A study to verify the alleviation effect on menstrual pain

Acronym

A study to verify the alleviation effect on menstrual pain

Scientific Title

A study to verify the alleviation effect on menstrual pain: a randomized, placebo-controlled, double-blind, parallel-group comparison study

Scientific Title:Acronym

A study to verify the alleviation effect on menstrual pain

Region

Japan


Condition

Condition

Healthy Japanese

Classification by specialty

Not applicable Adult

Classification by malignancy

Others

Genomic information

YES


Objectives

Narrative objectives1

To verify the effects of consumption of the test product on menstrual pain

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1

Exploratory

Trial characteristics_2

Pragmatic

Developmental phase

Not applicable


Assessment

Primary outcomes

1. Japanese version of Short-Form McGill Pain Questionnaire 2 (SF-MPQ-2)

Key secondary outcomes

1. Frequency of analgesic doses, fatty acid composition, and other parameters


Base

Study type

Interventional


Study design

Basic design

Parallel

Randomization

Randomized

Randomization unit

Individual

Blinding

Double blind -all involved are blinded

Control

Placebo

Stratification

YES

Dynamic allocation


Institution consideration

Institution is not considered as adjustment factor.

Blocking

YES

Concealment



Intervention

No. of arms

3

Purpose of intervention

Educational,Counseling,Training

Type of intervention

Food

Interventions/Control_1

Duration: Approximately five months (four cycles of menstruation: 100~160 days)
Test product: Fish sausage containing high-dose purified fish oil

Interventions/Control_2

Duration: Approximately five months (four cycles of menstruation: 100~160 days)
Test product: Fish sausage containing purified fish oil

Interventions/Control_3

Duration: Approximately five months (four cycles of menstruation: 100~160 days)
Test product: Fish sausage containing palm oil

Interventions/Control_4


Interventions/Control_5


Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit

18 years-old <=

Age-upper limit

29 years-old >=

Gender

Female

Key inclusion criteria

1. Japanese

2. Women

3. Individuals aged between 18 and 29 years

4. Healthy individuals

5. Individuals whose last two menstrual cycles were between 25 and 32 days

6. Individuals whose Numerical Rating Scale (NRS) is four or more at screening

7. Individuals who take painkillers or pills for menstrual pain at their own discretion*

*This excludes those instructed by a physician to take them for the treatment of a disease. It also excludes those taking them for purposes other than menstrual pain.

Key exclusion criteria

Individuals who
1. are undergoing treatment or have a history of malignant tumor, heart failure, or myocardial infarction

2. have a pacemaker or an implantable cardioverter defibrillator

3. are undergoing treatment for cardiac arrhythmia, liver disorder, chronic kidney disease, cerebrovascular disorder, rheumatic disease, diabetes mellitus, dyslipidemia, hypertension, or any other chronic diseases

4. are taking "Foods for Specified Health Uses" or "Foods with Functional Claims"

5. are taking or using medicines (including herbal medicines) or supplements for purposes other than the treatment or alleviation of menstrual pain or menstrual complaints

6. are allergic to medicines or foods related to the test product (seafood, wheat, soybeans, or gelatin)

7. consume fish (e.g., blue-backed fish such as mackerel, sardines, or horse mackerel; tuna; skipjack; cod; or salmon) four or more times per week, or may significantly change the frequency or amount of fish intake during this study

8. have a history of positive or false-positive tumor markers (e.g., CA125 or CA19-9) during health examinations or others

9. are judged as ineligible to participate in this study because their CA125 exceeded 35 U/mL or CA19-9 exceeded 37 U/mL at the 0-cycle menstrual examination

10. may undergo treatment involving bleeding (e.g., surgery or tooth extraction) during this study or within two weeks after the end of the intervention

11. have been diagnosed with or have a history of premenstrual dysphoric disorder (PMDD), or meet the diagnostic criteria in the "Guidelines for Obstetrics and Gynecology Practice -Gynecology Outpatient 2023"

12. are pregnant, lactating, or planning to become pregnant during this study

13. have been enrolled in other clinical studies within the last 28 days before the agreement to participate in this study or plan to participate in another study during this study

14. are judged as ineligible to participate in this study by the physician

Target sample size

69


Research contact person

Name of lead principal investigator

1st name Tsuyoshi
Middle name
Last name Takara

Organization

Medical Corporation Seishinkai, Takara Clinic

Division name

Director

Zip code

141-0022

Address

9F Taisei Bldg., 2-3-2, Higashi-gotanda, Shinagawa-ku, Tokyo, Japan

TEL

03-5793-3623

Email

t-takara@takara-clinic.com


Public contact

Name of contact person

1st name Naoko
Middle name
Last name Suzuki

Organization

ORTHOMEDICO Inc.

Division name

R&D Department

Zip code

112-0002

Address

2F Sumitomo Fudosan Korakuen Bldg., 1-4-1, Koishikawa, Bunkyo-ku, Tokyo, Japan

TEL

03-3818-0610

Homepage URL


Email

nao@orthomedico.jp


Sponsor or person

Institute

Maruha Nichiro Corporation

Institute

Department

Personal name



Funding Source

Organization

Maruha Nichiro Corporation

Organization

Division

Category of Funding Organization

Profit organization

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

The ethical committee of the Takara Clinic, Medical Corporation Seishinkai

Address

9F Taisei Bldg., 2-3-2, Higashi-gotanda, Shinagawa-ku, Tokyo, Japan

Tel

03-5793-3623

Email

IRB@takara-clinic.com


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions

医療法人社団盛心会 タカラクリニック (東京都)
Medical Corporation Seishinkai, Takara Clinic (Tokyo, Japan)

南町医院 (東京都)
Nerima Medical Association, Minami-machi Clinic (Tokyo, Japan)


Other administrative information

Date of disclosure of the study information

2026 Year 07 Month 23 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled

78

Results


Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

No longer recruiting

Date of protocol fixation

2025 Year 07 Month 09 Day

Date of IRB

2025 Year 07 Month 09 Day

Anticipated trial start date

2025 Year 07 Month 23 Day

Last follow-up date

2026 Year 02 Month 15 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information



Management information

Registered date

2025 Year 07 Month 23 Day

Last modified on

2025 Year 11 Month 06 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000066972