Can L-Theanine Help with Anxiety Management?

Can L-Theanine Help with Anxiety Management?

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L-theanine is a unique non-protein amino acid found in green tea and is also available over the counter in 100 mg, 150 mg, 200 mg, and 250 mg capsules. It has shown efficacy as a neuroprotective and cognitive-enhancing agent, but can L-Theanine help with anxiety management?

Our following video discussion by Dr. Harvinder Singh will attempt to answer this question and will be summarized in the following sections:

  1. L-Theanine: Mechanism of Action
  2. Article #1: Anti-Stress, Behavioural and Magnetoencephalography Effects of an L-Theanine-Based Nutrient Drink.
  3. Article #2: Anti-stress effect of theanine on students during pharmacy practice: positive correlation among salivary α-amylase activity, trait anxiety, and subjective stress.
  4. Article #3: Effects of chronic l-theanine administration in patients with major depressive disorder.
  5. Article #4: Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults.


  1. Nutrients. 2019 Oct; 11(10): 2362. (pubmed)
  2. Acta Neuropsychiatr . 2017 Apr;29(2):72-79. (pubmed)
  3. Pharmacol Biochem Behav . 2013 Oct;111:128-35. (pubmed)
  4. Nutrients . 2016 Jan 19;8(1):53. (pubmed)



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