BACKGROUND: Although several effective therapies exist for Attention Deficit Hyperactivity Disorder (ADHD), current pharmaceutical treatment carries a high risk of misuse and high levels of discontinuation, evidencing a need for alternatives. One possible avenue is serotonergic intervention, particularly within the serotonin synthesis pathway, where there are several potential loci of dysfunction in ADHD. This study aimed to assess the efficacy of acute 5-hydroxytryptophan, a serotonin…
