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THEANINE

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AUTHENTIC PRODUCTS

Only original pharmaceutical products that passed 3 stages of clinical trials.

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What is Theanine Dosage?

The recommended dose for adults is 2 pills per day. The course duration is 1 month or more, if necessary.

L-Theanine and Caffeine

A very popular nootropic stack is Theanine and Caffeine. Studies confirm that the effects of L-Theanine when combined with caffeine are enhanced and adverse reactions such as headaches tend to cease. In general L-Theanine and caffeine in combination are known to be beneficial for improving performance and cognitive function.

  1. Nathan et al (2006) The neuropharmacology of L-theanine(N-ethyl-L-glutamine): a possible neuroprotective and cognitive enhancing agent 
  2. Egashira et al (2008) Theanine prevents memory impairment induced by repeated cerebral ischemia in rats 
  3. Kaduda T (2011) Neuroprotective effects of theanine and its preventive effects on cognitive dysfunction 
  4. Lyon et al (2011) The effects of L-theanine (Suntheanine®) on objective sleep quality in boys with attention deficit hyperactivity disorder (ADHD): a randomized, double-blind, placebo-controlled clinical trial 
  5. Liu et al (2016) Theanine from tea and its semi-synthetic derivative TBrC suppress human cervical cancer growth and migration by inhibiting EGFR/Met-Akt/NF-κB signaling 
  6. Kahathuduwa et al (2019) L-theanine and Caffeine Improve Sustained Attention, Impulsivity and Cognition in Children with Attention Deficit Hyperactivity Disorders by Decreasing Mind Wandering (OR29-04-19) 
  7. Yoneda et al (2020) Selective Upregulation by Theanine of Slc38a1 Expression in Neural Stem Cell for Brain Wellness 
  8. Williams et al (2020) The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review
  9. Shojaei-Zarghani et al (2021) Theanine and cancer: A systematic review of the literature 
  10. Xie et al (2022) Synergistic effects of epigallocatechin gallate and l-theanine in nerve repair and regeneration by anti-amyloid damage, promoting metabolism, and nourishing nerve cells 
  11. Xu et al (2022) L-Theanine regulates lipid metabolism by modulating gut microbiota and bile acid metabolism 
  12. Dassanayake et al (2022) Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control: a double-blind, placebo-controlled, crossover study 
  13. Zhang et al (2022) L-Theanine inhibits melanoma cell growth and migration via regulating expression of the clock gene BMAL1 

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04/22/2024

PK

Patricia K.

 Verified Buyer
US

US

Helpful

feeling more balanced and improved energy

04/23/2024

CosmicNootropic

Hi Patricia! We're happy to hear that this product has had these positive effects on you :)

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