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L-Theanine is a type of amino acid that is found mainly in tea leaves. It’s known for its ability to promote relaxation and reduce stress without causing drowsiness. This makes it potentially beneficial for people with Chronic Fatigue Syndrome (CFS).

Boost in Energy Levels

One of the main symptoms of CFS is persistent tiredness. L-Theanine can help increase the body’s energy levels by improving sleep quality, which is typically poor in people with CFS. By promoting deeper and more refreshing sleep, L-Theanine can help alleviate feelings of constant fatigue.

Reduction in Anxiety and Stress

People with CFS often also struggle with anxiety or depression. L-Theanine can help reduce these feelings by boosting the production of neurotransmitters in the brain, which impacts mood regulation. This can help sufferers of CFS feel more at ease.

Improved Cognitive Function

L-Theanine can also improve cognitive function by promoting the production of alpha brain waves. This can result in increased focus, creativity and alertness, all of which are typically reduced in people with CFS.

  • Boosts dopamine and serotonin production.
  • Enhances brain function and alertness.
  • Improves sleep quality and duration.
  • Reduces stress and anxiety symptoms.
  • Promotes overall mental well-being.

L-theanine: Purchase | Dosage | Benefits | Science

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Important Note: This information serves as a guideline only and should NOT replace specialist advice. Always consult your doctor, pharmacist or a health care professional like a nutritionist before starting any new treatment.

L-theanine Dosage for Chronic Fatigue

The recommended doses of L-theanine for Chronic Fatigue Syndrome vary widely since individual requirements may differ. Here is a general guideline:

  • For adults, regardless of gender:
    • The usual dosage of L-theanine recommended is between 100mg – 200mg per day.
  • For children:
    • There’s currently not enough research to establish a safe dose for children. It’s recommended to consult a healthcare provider.

Note: These are general guidelines. The dosage may vary based on individual n

Top 5 Benefits of L-Theanine for Chronic Fatigue Syndrome

  • Replenishes body’s energy reserves
  • Improves sleep quality
  • Boosts cognitive function
  • Reduces physical and mental stress
  • Supports immune system health
  1. Improves Sleep Quality: L-theanine promotes relaxation and contributes to better sleep by increasing gamma-aminobutyric acid (GABA), serotonin and dopamine levels in the brain.
  2. Reduces Stress and Anxiety: L-theanine has been shown to reduce psychological and physiological stress responses, and can therefore alleviate the anxiety often associated with chronic fatigue syndrome.
  3. Boosts Cognitive Function: By enhancing the brain’s alpha wave activity, L-theanine can improve cognitive performance, attention and reaction time – aspects often compromised in people with chronic fatigue.
  4. Inhibits Excitatory Brain Signals: L-theanine can inhibit excitatory brain signals and decrease the level of ‘stress hormones’ – both common issues in chronic fatigue syndrome.
  5. Boosts Immune System: Some research suggests that L-theanine can support the immune system, potentially helping to combat the recurring infections often experienced by those suffering from chronic fatigue syndrome.

Science exploring L-theanine & Burnout recovery

There isn’t currently any direct scientific literature focusing specifically on L-Theanine’s effects on chronic fatigue syndrome (CFS) or myalgic encephalomyelitis (ME). However, a related study that examines the effects of L-Theanine on individuals with major depressive disorder (MDD) could be of interest since fatigue and depressive symptoms often coexist in many chronic conditions, including CFS/ME.

Effects of chronic l-theanine administration in patients with major depressive disorder: an open-label study |

This study investigates the effects of L-Theanine, found in green tea, on patients with major depressive disorder. In this open-label clinical trial, L-Theanine was added to existing medication for 8 weeks, showing improvements in depressive symptoms, anxiety, sleep disturbances, and cognitive functions. Further placebo-controlled studies are needed for conclusive evidence.

Natural sources of L-theanine

The best natural sources of L-theanine include:

  • Green tea
  • Black tea
  • White tea
  • Certain types of mushrooms

Our favourite L-theanine brand

We don’t recommend any single L-theanine brand, but we like when they’re mixed with Lemon Balm!