Yaron Daniely, PhD, MBA, CEO of Alcobra Pharma, talks about the problems with current medications for ADHD. First class medications against ADHD include scheduled stimulants such as Ritalin, Adderall, Vyvanse and Concerta. Despite being effective and fast-acting, these drugs pose a risk of adverse side effects, and are regarded as less tolerable treatment options. The second class of medications against ADHD is non-stimulants, which are less effective, slower acting, non-scheduled drugs. These drugs are also considered to have a sub-optimal tolerance, with several potential side effects.