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.

11 Dec 2011Lyon MR, Kapoor MP, Juneja LR.

This study demonstrates that 400 mg daily of L-theanine is safe and effective in improving some aspects of sleep quality in boys diagnosed with ADHD. Since sleep problems are a common co-morbidity associated with ADHD, and because disturbed sleep may be linked etiologically to this disorder, L-theanine may represent a safe and important adjunctive therapy in childhood ADHD

Randomized Controlled Trial
1 effect
6 months
97 subjects

Reported Outcomes


Green Tea Beverage risk & protective factor
Minor Protective Factor Green Tea

Sleep Musculoskeletal outcome
Minor increase risk of Sleep
Musculoskeletal system

Low evidence