L-Theanine is an amino acid predominantly found in the leaves of the tea plant, Camellia sinensis, and is particularly abundant in green tea. It has gained attention for its potential health benefits, especially in promoting relaxation and improving mental focus without causing drowsiness. Research indicates that L-Theanine may help increase the production of alpha brain waves, which are associated with a state of relaxed alertness. Additionally, it is believed to modulate levels of certain neur

How many studies on L-Theanine are available?

NutriVouch references 101 human studies on L-Theanine, all peer-reviewed and indexed on PubMed.

Is L-Theanine effective for Stress Relief?

For Stress Relief, L-Theanine has an effectiveness score of 6/10 — moderate evidence — works in some populations. Based on 16 relevant studies.

Is L-Theanine effective for Better Sleep?

For Better Sleep, L-Theanine has an effectiveness score of 5/10 — moderate evidence — works in some populations. Based on 25 relevant studies.

Is L-Theanine effective for Anxiety Support?

For Anxiety Support, L-Theanine has an effectiveness score of 5/10 — moderate evidence — works in some populations. Based on 18 relevant studies.

Is L-Theanine effective for Cognitive Function?

For Cognitive Function, L-Theanine has an effectiveness score of 5/10 — moderate evidence — works in some populations. Based on 28 relevant studies.

Is L-Theanine effective for Focus & Concentration?

For Focus & Concentration, L-Theanine has an effectiveness score of 5/10 — moderate evidence — works in some populations. Based on 16 relevant studies.