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The effects of ubiquinol supplementation on maintaining of cognitive performance and the changes in oral bacterial flora: randomized, double-blind, placebo-controlled trial - Ubiquinol and cognitive performance: RCT

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000038014

Enrollment

110

Registered

2019-09-17

Start date

2019-09-21

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 of 100 mg ubiquinol after breakfast everyday for 24 weeks. Intake of 100 mg placebo capsule after breakfast everyday for 24 weeks.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: (1) Those who can participate in the health examination (2) Those whose age at the time of random allocation is 50 and over (3) Those who can understand the purpose and the contents of this study, and can agree with participation by letter

Exclusion criteria

Exclusion criteria: (1) The presence of allergic response to test foods. (2) Pregnancy or beast-feeding. (3) Those who participated in other clinical trials within three months of agreement. (4) Those who consume coenzyme Q10 supplements routinely. (5) Possibly dementia (6) Those who have past medical history of celebrovascular disease such as stroke (7) In addition, those who were judged inadequate by the principal investigator.

Design outcomes

Primary

Measure	Time frame
cognitive performance	—

Countries

Japan

Contacts

Public ContactTetsu Kinoshita

Institute of Community Life Sciences Co., Ltd. Social Epidemiology Institute

tetsu.prospective@gmail.com0899047811

Outcome results

None listed

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