RecruitingPhase 4Drug trialA Trial of Dyanavel XR in Treating Co-occurring Fatigue Symptoms in Adults With Attention Deficit Hyperactivity Disorder (ADHD).The goal of this clinical trial is to study the impact of Dyanavel on co-occuring fatigue in adults with Attention Deficit/Hyperactivity Disorder. The main question it aims to answer is whether Dyanavel XR leads to a statistically significant reduction in fatigue compared to placebo, as measured by the Fatigue Symptom Inventory.