Effects of L-theanine-caffeine combination on selective attention among adolescents with attention-deficit hyperactivity disorder: a double-blind, placebo-controlled, crossover study

CONCLUSIONS: High-dose L-theanine-caffeine combination may enhance neural resource allocation and speed of deployment of selective attention, stabilize reaction speed throughout the task duration and reduce false alarms in adolescents with ADHD, supporting its potential as a nutraceutical adjunct for ADHD.Trial registration: Sri Lanka Clinical Trials Registry identifier: SLCTR/2023/004.

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