| Recruiting | 4 | 100 | US | Quillivant XR, Placebo | Children's Hospital Medical Center, Cincinnati, University of California, Davis | Down Syndrome, ADHD | 09/25 | 09/25 | | |
| Recruiting | 4 | 226 | US | Methylphenidate, Concerta, Ritalin, Daytrana, Aptensio XR, Metadate CD, Methylin, Quillivant XR, Jornay PM, Adhansia XR, Cotempla, Placebo, sugar pill, lactose | VA Office of Research and Development, VA New York Harbor Healthcare System, Portland VA Medical Center, Miami VA Healthcare System, VA Boston Healthcare System | Epilepsy | 09/27 | 09/27 | | |