Otsuka’s Simtriyo nod: Qelbree vs. three in ADHD? Otsuka Pharmaceutical Co. Ltd. will likely look next to expand the label of Simtriyo (centanafadine) into patients with comorbid anxiety, having won the U.S. FDA’s green light as a once-daily extended-release capsule for attention deficit hyperactivity disorder (ADHD) in adults plus pediatrics age 6 years and older who weigh at least 20 kg (about 44 lbs.