Study on improvement of sleeping disorder by ingestion of mixed fermented tea leaf powder made from unripe orange fruits and green tea leaves(2)

Study on improvement of sleeping disorder by ingestion of mixed fermented tea leaf powder made from unripe orange fruits and green tea leaves(2) - Study on improvement of sleeping disorder by ingestion of mixed fermented tea leaf powder(2)

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000034812

Enrollment

Registered

2018-11-22

Start date

2018-11-17

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

sleeping disorder

Interventions

The subjects ingested the placebo meal for two weeks,and ingented the active meal for two weeks after two weeks. The subjects ingested the active meal for two weeks,and ingented the active meal for tw

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Aged more than 20 (Healthy male and female between 20 and 70 years old) 2) Individuals who has subjective symptoms of sleeping disorder 3) Individuals who can refrain from over drinking and over eating during the test period 4) Individuals who understand the purpose and contents of the experiment

Exclusion criteria

Exclusion criteria: 1)Subjects who are contracting or treating severe kidney and/or liver diseases 2)Individuals who have a chronic diseases and regularly use drugs 3)Those who can not stop taking a large amount of green tea or black tea during the test period 4)Pregnant women, or women with intending to become pregnant, and lactating woman 5)Individuals participating or intending to participate in a drug administration test 6)Individuals judged by the doctor to be unsuitable

Design outcomes

Primary

Measure	Time frame
sleeping disorder	—

Countries

Japan

Contacts

Public ContactHideki Ito

Univercity of Nagasaki Regional Partnership Center

katanaka@sun.ac.jp0958135500

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026