W.GlintborgD.BrixenK.FlyvbjergA.HrderK.et al (2007)
Providers typically recommend reassessment within 412 weeks of initiating or adjusting therapy to evaluate efficacy, tolerability, and metabolic parameters including glucose control and lipid profiles
Among the benefits for which L-theanine has been shown effective, youll find improvements in:4 Stress Sleep Neurological health (including memory and attention) Longevity Blood flow Theres also ample evidence that L-theanine can offset the less pleasant effects of caffeine and even work synergistically with caffeine to improve focus.14 15 Lets take a quick look at each of these potential benefits and what research says about them: Stress and anxiety In a Japanese study looking at the effects of 200mg of L-theanine, participants in the treatment groups verbal fluency and letter fluency improved in the face of stress compared to placebo.8 And a larger review of studies using 200-400mg doses found reductions in self-reported stress as well as improvements in stressor tasks, reaction time, and brain wave activity.16 Sleep L-Theanines sleep benefits are tied to its stress-reduction potential
Li Y, Bai Y, Liu Z, Ozaki T, Taniguchi E, Mori I, Nagayama K, Nakamura H, Kakudo K
Endocrinologia, diabetes y nutricion, 71(3), 124132
