L-theanine high dose
Selected indexed studies
- High-dose L-theanine-caffeine combination improves neurobehavioural and neurophysiological measures of selective attention in acutely sleep-deprived young adults: a double-blind, placebo-controlled crossover study. (Br J Nutr, 2025) [PMID:40789769]
- Theanine. (, 2006) [PMID:40460226]
- L-Theanine Alleviates High-Fat Diet-Induced Obesity by Enhancing Hepatic Oxidative Phosphorylation and Remodeling Gut Microbiota to Augment Butyrate-Producing. (Mol Nutr Food Res, 2025) [PMID:40884126]
_Worker-drafted node — pending editorial review._
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L-theanine high dose helps
L-theanine high dose protects against
Sources
- High-dose L-theanine-caffeine combination improves neurobehavioural and neurophysiological measures of selective attention in acutely sleep-deprived young adults: a double-blind, placebo-controlled crossover study. (2025) pubmed
- Theanine. (2006) pubmed
- Theanine Improves High-Dose Epigallocatechin-3-Gallate-Induced Lifespan Reduction in Caenorhabditis elegans. (2021) pubmed
- Low-dose epigallocatechin gallate combined with L-theanine effectively alleviate obesity and metabolic dysfunction-associated steatotic liver disease by remodeling gut homeostasis and avoiding its hepatotoxicity. (2026) pubmed
- The Protective Effects of L-Theanine against Epigallocatechin Gallate-Induced Acute Liver Injury in Mice. (2024) pubmed
- L-Theanine Improves Immunity by Altering TH2/TH1 Cytokine Balance, Brain Neurotransmitters, and Expression of Phospholipase C in Rat Hearts. (2016) pubmed
- l-theanine alleviates liver and kidney dysfunction in septic rats induced by cecal ligation and puncture. (2020) pubmed
- Minimal Influence of Formulated Nutritional Interventions on Sleep and Next-Morning Physical Performance, Cognitive Function, and Postural Sway in Adult Males: A Randomized, Placebo-Controlled, Crossover Study. (2025) pubmed
- Effects of L-theanine-caffeine combination on selective attention among adolescents with attention-deficit hyperactivity disorder: a double-blind, placebo-controlled, crossover study. (2026) pubmed
- Attenuation Effect of Withania somnifera Extract on Restraint Stress-Induced Anxiety-like Behavior and Hippocampal Alterations in Mice. (2025) pubmed
- L-Theanine Alleviates High-Fat Diet-Induced Obesity by Enhancing Hepatic Oxidative Phosphorylation and Remodeling Gut Microbiota to Augment Butyrate-Producing. (2025) pubmed
- L-theanine improves neurophysiological measures of attention in a dose-dependent manner: a double-blind, placebo-controlled, crossover study. (2022) pubmed
- Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control: a double-blind, placebo-controlled, crossover study. (2023) pubmed
- L-Theanine Mitigates the Harmful Effects of Excess High-Protein Diet in Rats by Regulating Protein Metabolism. (2023) pubmed
- A Randomized, Triple-Blind, Placebo-Controlled, Crossover Study to Investigate the Efficacy of a Single Dose of AlphaWave(®) L-Theanine on Stress in a Healthy Adult Population. (2021) pubmed