The Science Stuff
Don't just take our word on the benefits of the ingredients in our products! Click on the list of ingredients to see what the clever people have got to say
L-THEANINE
200 mg of Zen: L-Theanine Boosts Alpha Waves, Promotes Alert Relaxation
https://doi.org/10.1089/10762800151125092
Theanine, r-glutamylethylamide, increases neurotransmission concentrations and neurotrophin mRNA levels in the brain during lactation
DOI: 10.1016/j.lfs.2007.08.023
Effects of Theanine on the Release of Brain Alpha Wave in Adult Males
The combined effects of L-theanine and caffeine on cognitive performance and mood
A combination of green tea extract and l-theanine improves memory and attention in subjects with mild cognitive impairment: a double-blind placebo-controlled study
Effects of L-Theanine on the Release of .ALPHA.-Brain Waves in Human Volunteers.
DOI:10.1271/nogeikagaku1924.72.153
The effects of l-theanine, caffeine and their combination on cognition and mood
https://doi.org/10.1016/j.biopsycho.2007.09.008
Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial
https://doi.org/10.3390/nu11102362
Effects of l-Theanine on Cognitive Function in Middle-Aged and Older Subjects: A Randomized Placebo-Controlled Study
https://doi.org/10.1089/jmf.2020.4803
The Neuropharmacology of L-Theanine(N-Ethyl-L-Glutamine) A Possible Neuroprotective and Cognitive Enhancing Agent
https://doi.org/10.1080/J157v06n02_02
Psychological effects of dietary components of tea: caffeine and L-theanine
https://doi.org/10.1111/j.1753-4887.2007.00011.x
L-theanine and Caffeine Improve Sustained Attention, Impulsivity and Cognition in Children with Attention Deficit Hyperactivity Disorders by Decreasing Mind Wandering (OR29-04-19)
https://doi.org/10.1093/cdn/nzz031.OR29-04-19
L-theanine prevent quinolinic acid induced motor deficit and striatal neurotoxicity: Reduction in oxido-nitrosative stress and restoration of striatal neurotransmitters level
https://doi.org/10.1016/j.ejphar.2017.06.016
l-Theanine reduces psychological and physiological stress responses
https://doi.org/10.1016/j.biopsycho.2006.06.006
Pharmacology and therapeutic uses of theanine
https://doi.org/10.2146/ajhp050148
A Combination of Green Tea Extract and l-Theanine Improves Memory and Attention in Subjects with Mild Cognitive Impairment: A Double-Blind Placebo-Controlled Study