L-theanine is an amino acid found primarily in green and black tea and some mushrooms.
Theanine, also known as L-γ-glutamylethylamide and N -ethyl-L-glutamine, is an amino acid analogue of the proteinogenic amino acids L-glutamate and L-glutamine and is found primarily in particular plant and fungal species.
L-theanine is an amino acid naturally found in plant sources such as tea leaves and some mushrooms. L-theanine benefits include helping to support alertness, relaxation, and sleep. The appeal of L-theanine stems from its ability to support a state of alert relaxation, so it can calm you down without causing drowsiness.
Tea is the most widely consumed beverage in the world after water. Tea is known to be a rich source of flavonoid antioxidants. However tea also contains a unique amino acid, L-theanine that may modulate aspects of brain function in humans.
BENEFITS
Better mental focus. Many people drink black or green tea while at work, believing that it boosts their mental focus.