healthy person
Conditions
Interventions
Taking L-theanine 200mg/day once a day for 4 weeks
Taking placebo once a day for 4 weeks
Sponsors
Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry
Department of Research and Development, Nutrition Division, Taiyo Kagaku Co. Ltd, Mie, Japan
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: People who have not been diagnosed with psychiatric disorders
Exclusion criteria
Exclusion criteria: First, people who have been diagnosed with psychiatric disorders. Second, people during pregnancy or so suspected. Third, people who suffer from any serious physical disorders.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Change in depressive symptoms before administration, after 4 weeks, 6 weeks, and 10 weeks after administration | — |
Secondary
| Measure | Time frame |
|---|---|
| Change in cognitive functions before administration, after 4 weeks, 6 weeks, and 10 weeks after administration | — |
Countries
Japan
Contacts
Public ContactShinsuke Hidese
National Center of Neurology and Psychiatry Department of Mental Disorder Research, National Institute of Neuroscience
Outcome results
None listed