Investigation of effects of vitamin C on fatigue.

Investigation of effects of vitamin C on fatigue. - Investigation of effects of vitamin C on fatigue.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000011432

Enrollment

Registered

2013-08-17

Start date

2013-08-17

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

Healthy adults

Interventions

Taking vitamin C, drawing blood, questionnaires and medical interviews

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: People able to take vitamin C 2000 mg/day for four weeks at Otemachi Sakura Clinic in Toyosu.

Exclusion criteria

Exclusion criteria: Lack of ability to consent, severe physical illness, people judged not suitable by doctor.

Design outcomes

Primary

Measure	Time frame
Assessments of objective fatigue symptoms, fatigue related factors in blood and saliva samples.	—

Countries

Japan

Contacts

Public ContactKazuhiro Kondo

The Jikei University School of Medicine Department of Virology

kkondo@jikei.ac.jp03-3433-1111

Outcome results

None listed

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