The effect of L-theanine on psychotic symptoms in human

The effect of L-theanine on psychotic symptoms in human - The effect of L-theanine in human

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000007006

Enrollment

Registered

2012-01-04

Start date

2012-01-04

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

schizophrenia

Interventions

8 weeks 250mg per a day once a day

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Schizophrenics diagnosed according to the Diagnostic and Statistical Manual of Mental Disorders, 4th edition, and age and sex matched healthy subjects were recruited. Written informed consent was obtained for the participation in the study from all subjects.

Exclusion criteria

Exclusion criteria: Participants were excluded if they had a prior medical history of central nervous system disease or severe head injury.

Design outcomes

Primary

Measure	Time frame
We evaluate the effect og theanine on the severity of schizophrenic symptoms and cognitive functions.	—

Countries

Japan

Contacts

Public ContactMiho Ota

National Institute of Neuroscience, National Center of Neurology and Psychiatry Department of Mental Disorder Research

ota@ncnp.go.jp042-341-2712

Outcome results

None listed

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