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

Exclusion criteria

• ✕. Subjects with gross visual or auditory impairments that might limit their ability to perform neuropsychological tasks
• ✕. Inability to read and follow written instructions
• ✕. Physical, neurological, intellectual, or psychiatric impairments (except ADHD or ASD) that could affect cognitive and motor functions
• ✕. Subjects on medications including antidepressants and antipsychotics that may affect performance in the tasks
• ✕. Subjects on medications that are likely to interact with the administered substances, including regular intake of medication that could alter visual, auditory, cognitive, or motor functions (except stimulants)
• ✕. History of head injury resulting in loss of consciousness/history of brain surgery
• ✕. Subjects who have developed adverse effects when caffeine/paraxanthine /L-theanine/corn starch (will be in placebo) containing products were consumed
• ✕. Subjects who are unwilling or unable to refrain from intake of L-theanine/ caffeine/ paraxanthine containing food or beverages within the 24 hours prior to each study visit