Apply to trial NCT07189442

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RecruitingDietary supplement

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

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.

How this works

Answer a few questions
About 5 to 10 minutes. Skip-friendly where possible.
We connect you with the study team
When a site picks up your application, we introduce you to their team directly — with you on the thread.
The team reaches out to schedule screening
Usually within a few business days, via the contact you give.

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

How this works

Answer a few questions

We connect you with the study team

The team reaches out to schedule screening