Vyvanse is a prescription medication used to treat attention deficit hyperactivity disorder (ADHD) and binge eating disorder. It contains the active ingredient lisdexamfetamine dimesylate, which is a prodrug that is converted to dextroamphetamine in the body. Dextroamphetamine is a central nervous system (CNS) stimulant that increases the levels of dopamine and norepinephrine in the brain, leading to improved focus, attention, and alertness. Vyvanse is available in capsule form and is usually taken once daily in the morning. The dose may be adjusted based on individual response and tolerance. The medication is typically used as part of a comprehensive treatment plan that includes behavioral therapy, counseling, and other interventions.