A novel amphetamine sulfate improved symptoms in adults with attention-deficit-hyperactivity disorder (ADHD), according to a phase III study. In the randomized, double-blind study, adults given 20 mg of the investigational AR19 saw a significant improvement in total score on the Adult ADHD Investigator Symptom Rating Scale (AISRS) compared with placebo after 5 weeks...reported Ann Childress, MD, of the Center for Psychiatry and Behavioral Medicine in Las Vegas, and colleagues.