Efficacy of liber function and safety by ingestion of supplement containing freshwater clam extractive: a randomized, double blind, placebo-controlled cross over study

Efficacy of liber function and safety by ingestion of supplement containing freshwater clam extractive: a randomized, double blind, placebo-controlled cross over study - Efficacy of liber function and safety by ingestion of supplement containing freshwater clam extractive

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000019882

Enrollment

Registered

2015-11-20

Start date

2015-11-20

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

Intake test sample for 7 days, and take wash out period for 2 week, then intake placebo for 7 days. Intake placebo for 7 days, and take wash out period for 2 week, then intake test sample for 7 days.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Male and female between 30 and 69 years of age

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 other reasons

Design outcomes

Primary

Measure	Time frame
gamma-GTP (before and after ingestion of supplement for 7 days)	—

Secondary

Measure	Time frame
subjective evaluation (before and after ingestion of supplement for 7 days), safety (before and after quintuple ingestion for 4 weeks)	—

Countries

Japan

Contacts

Public ContactHirohisa Kojima

Japan clinical trial association N.A.

info@yakujihou.org03-6457-4666

Outcome results

None listed

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