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High dose L theaninecaffeine combination improves neurobehavioural and neurophysiological measures of selective attention in acutely sleep deprived young adults: a double blind, placebo controlled crossover study PMC L theanine Olivia McFadyen Benefits of L Theanine and L Carnitine for Autism and ADHD Kids Nutricost Caffeine with L Theanine Supplement, 100mg Each, 240 Capsules
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