L-Theanineand Anxiety.
Evidence gradeB
ImpactModerate
Confidencemedium
Imported rating. This grade comes from SuppCo and has not been independently reviewed. It describes research, not a product, and it is not medical advice.
The rating
- Direction
- Favourable
- Rated by
- SuppCo
- Observed
- 28 September 2026
Studies behind it
The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic ReviewJackson Williams · Plant Foods for Human Nutrition2019l-Theanine reduces psychological and physiological stress responsesK. Kimura · Biological Psychology2007Psychotropic effects of L-theanine and its clinical properties: from the management of anxiety and stress to a potential use in schizophrenia.Filipe Lopes Sakamoto · Pharmacological research2019