Zen Theanine is L-theanine, a unique amino acid found primarily in green tea. Studies show that theanine supports alpha-wave brain activity, associated with states of relaxed, peaceful wakeful alertness observed during meditation and biofeedback
L-theanine is a rare amino acid. This amino acid, with apparently only one exception, is found only in certain species of tea plants. It constitutes between 1 and 2% of the dry weight of tea leaves and accounts for approximately one half of all the free amino acids present in the leaves. First discovered in 1949, L-theanine not only is an important health-giving constituent of tea, but also is the major flavor component of green tea.
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