Does tryptophan-containing supplement improve depressive mood and autonomic nervous system function?

Does tryptophan-containing supplement improve depressive mood and autonomic nervous system function? - Does tryptophan-containing supplement improve depressive mood and autonomic nervous system function?

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000024035

Enrollment

Registered

2016-10-01

Start date

2016-10-01

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

depressive mood

Interventions

1-week oral ingestion of test supplement 1-week oral ingestion of placebo supplement

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: healthy university students and graduate students

Exclusion criteria

Exclusion criteria: 1. individuals who have mental disorders 2. individuals during pregnancy or breast-feeding

Design outcomes

Primary

Measure	Time frame
depressive mood - pre and post 1 week-intervention	—

Secondary

Measure	Time frame
autonomic nerve activity body composition blood biochemical parameters - pre and post 1 week-intervention	—

Countries

Japan

Contacts

Public ContactNatsuki Tsujita

Kyoto University Graduate School of Human and Environmental Studies

natsuki.morita823@gmail.com075-753-6640

Outcome results

None listed

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