A Trial to Assess How Centanafadine Interacts With Stimulants in the Body

Inclusion Criteria: * Body mass index (BMI) between 18.0 to 32.0 kilogram per square meter (kg/m2). * Must be in good health, based on: * Medical history * Physical examination * Heart test (Electrocardiogram \[ECG\]) * Lab tests (blood, urine and other routine checks) * Willing to stay in the clinic for the required time and agree to a follow-up phone call for safety. * Able to sign informed consent and, in the investigator's opinion, follow all trial requirements. Exclusion Criteria: * History of drug and/or alcohol abuse in past 2 years. * History of or current hepatitis or acquired immune deficiency syndrome (AIDS) or carriers of hepatitis B surface antigen (HBsAg) and/or anti-hepatitis C virus (HCV), or human immunodeficiency virus (HIV) antibodies. * Known drug allergy or hypersensitivity. * Any history of significant bleeding problems. * Difficulty donating blood in the past. * Use of tobacco or exposure to second-hand smoke in the past 2 months, or high cotinine levels in blood/urine. * Uncontrolled high blood pressure (BP) (systolic blood pressure \[SBP\] \> 140 millimeters of mercury (mmHg) or diastolic blood pressure \[DBP\] \> 90 mmHg) or symptomatic low blood pressure, or orthostatic hypotension (large BP drop when standing). * History of unexplained fainting (syncope). * Serious mental health disorders that could interfere with participation.