Vyvanse (generic name: lisdexamfetamine) is a prescription medication primarily used to treat attention deficit hyperactivity disorder (ADHD) and binge eating disorder (BED). It belongs to a class of drugs known as central nervous system (CNS) stimulants, which work by increasing levels of certain neurotransmitters in the brain, such as dopamine and norepinephrine. This helps improve attention, focus, and impulse control, making Vyvanse particularly effective for individuals with ADHD.