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L-theanine and Paraxanthine for Cognitive Improvement in Adults With ADHD and ASD

Texas Tech University Health Sciences Center · 2025
ClinicalTrials.gov · Datasets · License: Public Domain · 2025
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adhdattention-deficit-hyperactivity-disorderautismautism-spectrum-disorderautism-spectrum-disorder-asdna
This pilot study will test whether combining L-theanine and paraxanthine improves sustained attention, inhibitory control, and overall cognition in adults with ADHD and ASD. Two parallel randomized, single-blinded, repeated-measures crossover trials will be conducted. Participants will complete neuropsychological testing, fMRI scanning, and self-report measures following administration of the L-theanine-paraxanthine combination compared to placebo.
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