Acute effects of theanine, caffeine and theanine-caffeine combination on attention.

@article{Kahathuduwa2017AcuteEO,
  title={Acute effects of theanine, caffeine and theanine-caffeine combination on attention.},
  author={Chanaka N Kahathuduwa and Tharaka L Dassanayake and A M Tissa Amarakoon and Vajira Senaka Weerasinghe},
  journal={Nutritional neuroscience},
  year={2017},
  volume={20 6},
  pages={
          369-377
        }
}
OBJECTIVE l-theanine is a constituent of tea which is claimed to enhance cognitive functions. We aimed to determine whether theanine and theanine-caffeine combination have acute positive effects on cognitive and neurophysiological measures of attention, compared to caffeine (a positive control) and a placebo in healthy individuals. DESIGN In a placebo-controlled, five-way crossover trial in 20 healthy male volunteers, we compared the effects of l-theanine (200 mg), caffeine (160 mg), their… CONTINUE READING
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