Effect of burdock tea on intestinal environment in subjects with a tendency toward constipation: a randomized, double-blind, placebo-controlled, cross-over trial.

Effect of burdock tea on intestinal environment in subjects with a tendency toward constipation: a randomized, double-blind, placebo-controlled, cross-over trial. - Effect of burdock tea on intestinal environment in subjects with a tendency toward constipation

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000024765

Enrollment

Registered

2016-11-08

Start date

2016-11-08

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

Healthy adult

Interventions

A test drink per day for 2 weeks. A placebo drink per day for 2 weeks.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: People whose defecation frequency per two weeks is more than 10

Exclusion criteria

Exclusion criteria: 1. Subjects with food allergies 2. Subjects who are pregnant or lactating 3. Subjects who consume medicinal product which may influence the outcome of the study 4.Subjects who consume food which may influence the outcome of the study 5. Subjects who are judged as unsuitable for the study by the investigator for the other reason

Design outcomes

Primary

Measure	Time frame
Defecation frequency and days of defecation.	—

Secondary

Measure	Time frame
Amount of defecation, Bristol Stool Form Scale, stool color and smell, feeling after defecation will be measured.	—

Countries

Japan

Contacts

Public ContactHirohisa Kojima

Japan clinical trial assosiation N.A.

info@yakujihou.org03-6457-4666

Outcome results

None listed

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