L-Theanine
supplementL-Theanine promotes calm focus without drowsiness.
Reported Benefits
High-dose L-theanine-caffeine combination improves neurobehavioural and neurophysiological measures of selective attention in acutely sleep-deprived young adults: a double-blind, placebo-controlled crossover study.
Camfield DA, Stough C, Kean J, Scholey A
A high-dose L-Theanine and caffeine combination enhanced attentional focus and discriminability in sleep-deprived healthy young adults by suppressing mind wandering.
L-Theanine: A Unique Functional Amino Acid in Tea (Camellia sinensis L.) With Multiple Health Benefits and Food Applications
Rao Y, Shen W, Zhang Y, Xue W, Xia Q
Review highlights L-Theanine's benefits on stress reduction and cognitive function in healthy humans, including decreased subjective stress and salivary cortisol responses to cognitive stressors.
L-Theanine: A Unique Functional Amino Acid in Tea (Camellia sinensis L.) With Multiple Health Benefits and Food Applications
Rao Y, Shen W, Zhang Y, Xue W, Xia Q
Review highlights L-Theanine's benefits on stress reduction and cognitive function in healthy humans, including decreased subjective stress and salivary cortisol responses to cognitive stressors.
Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
Hidese S, Ogawa S, Ota M, Hidese T, Ozawa S, Kunugi H
Four weeks of 200mg daily L-Theanine reduced depression, anxiety-trait, and sleep disturbance scores while improving verbal fluency and executive function in healthy adults, with no adverse events reported.
No side effects tracked yet
No side effects have been reported by studies or users for this habit yet.
Research (3 studies)
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