Improvement effects of mouth odor with 'natamame' tea : a randomized, double blind, placebo-controlled study

Improvement effects of mouth odor with 'natamame' tea : a randomized, double blind, placebo-controlled study - Improvement effects of mouth odor with 'natamame' tea

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000018928

Enrollment

Registered

2015-09-08

Start date

2015-09-08

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

Ingestion of &#39

natamame&#39

tea for 12 consecutive weeks Ingestion of placebo for 12 consecutive weeks

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Male and female between 40 and 69 years of age inclusive 2. Subjects with mouth odor

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
organoleptic evaluation, oral gas test, expired gas test, subjective evaluation	—

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

Improvement effects of mouth odor with &#39;natamame&#39; tea : a randomized, double blind, placebo-controlled study