Karunaratne, U.W.; Karunarathne, D.T.; Kariyawasam, H.K.
(Faculty of Medicine, University of Kelaniya, Sri Lanka, 2021)
Introduction: L-theanine is a non-protein-forming amino acid found in tea. Limited evidence suggests that it improves selective attention. Sleep deprivation impairs attention and psychomotor reactions, potentially affecting ...