What does the evidence say about L-Theanine Insomnia Randomized Trial?

Updated July 2026

Quick Answer

L-Theanine Insomnia Randomized Trial has evidence relevant to benefits, uncertainty, and practical interpretation, but conclusions should stay close to the cited sources. One representative finding is: Compared to baseline values, consumption of CTT significantly reduced ( p < 0.001) visual analog scale and numerical rating scale values by 57.17% and 55.46%, respectively.

Key Takeaways

  • 01Compared to baseline values, consumption of CTT significantly reduced ( p < 0.001) visual analog scale and numerical rating scale values by 57.17% and 55.46%, respectively. [Soh Z (2025)]
  • 02Meanwhile, non-CTT consumption significantly reduced ( p < 0.05) the severity of complexation, neuroticism, and confusion in the control group. [Soh Z (2025)]
  • 03This study aimed to evaluate the effects of chamomile and 1-theanine beverage intake on menstrual symptoms, pain intensity, mood, and sleep quality in young adult females with primary dysmenorrhea, using a two-phase continuous study design. [Soh Z (2025)]
  • 04In the first phase, a cross-sectional study was conducted to assess the prevalence of primary dysmenorrhea. [Soh Z (2025)]
The current Migaku evidence database contains 2 reusable source documents for L-Theanine Insomnia Randomized Trial. This answer focuses on benefits, uncertainty, and practical interpretation. - Compared to baseline values, consumption of CTT significantly reduced ( p < 0.001) visual analog scale and numerical rating scale values by 57.17% and 55.46%, respectively. [Soh Z (2025); evidence level 2] - Meanwhile, non-CTT consumption significantly reduced ( p < 0.05) the severity of complexation, neuroticism, and confusion in the control group. [Soh Z (2025); evidence level 2] - This study aimed to evaluate the effects of chamomile and 1-theanine beverage intake on menstrual symptoms, pain intensity, mood, and sleep quality in young adult females with primary dysmenorrhea, using a two-phase continuous study design. [Soh Z (2025); evidence level 2] - In the first phase, a cross-sectional study was conducted to assess the prevalence of primary dysmenorrhea. [Soh Z (2025); evidence level 2] - Sleep is a complex biological process whose evolutionary purpose has remained equivocal for quite some time.More recently, however, compelling evidence has emerged, leading to recognition of the numerous metabolic and physiological functions sleep contributes to and actively supports. [Conti Federica (2026); evidence level 4] Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording. This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.

Sources

  1. Effects of chamomile and -theanine beverage on menstrual pain, menstrual symptoms, mood, and sleep quality in young women experiencing primary dysmenorrhea: A randomized, double-blind, placebo-controlled study.
  2. Dietary Protocols to Promote and Improve Restful Sleep: A Narrative Review