L-Theanine

High Research Quality

Description

L-Theanine is an amino acid found in tea leaves, known for promoting relaxation without drowsiness.

Benefits

Evidence-supported benefits:

Significant reduction in stress and anxiety

Enhanced relaxation

Claimed benefits (insufficient evidence):

Reduced stress and anxiety (claimed)

Improved sleep quality (claimed)

Recommended Usage

100-200 mg daily.

Research Quality

4/5

Strong evidence from multiple high-quality studies.

Research Evidence

L-Theanine reduces psychological and physiological stress responses2007

Kimura K, et al.

Methodology

Randomized controlled trial

Participants

12 subjects

Key Outcomes

Reduced stress response

Kimura et al. (2007). Biological Psychology

Effects of L-Theanine administration on stress-related symptoms and cognitive functions in healthy adults2019

Hidese S, et al.

Methodology

Review

Participants

0 subjects

Key Outcomes

Confirmed anxiety-reducing effects

Hidese et al. (2019). Nutrients

L-theanine, a natural constituent in tea, and its effect on mental state2008

Nobre AC, et al.

Methodology

Study

Participants

0 subjects

Key Outcomes

Demonstrated improved relaxation and cognitive performance

Nobre et al. (2008). Asia Pacific Journal of Clinical Nutrition

Disclaimer: This information is for educational purposes only and not intended as medical advice. Please consult with a healthcare professional before taking any supplements, especially if you have underlying health conditions or are taking medications.