Vyvanse is a prescription medication primarily used to treat Attention Deficit Hyperactivity Disorder (ADHD) in children and adults. It contains the active ingredient lisdexamfetamine, which is a stimulant that helps increase attention and decrease impulsiveness and hyperactivity in patients with ADHD. Additionally, Vyvanse is sometimes prescribed for the treatment of binge eating disorder in adults. It works by affecting certain chemicals in the brain that contribute to impulse control and focus. As with any medication, it is important to use Vyvanse under the guidance of a healthcare professional to manage potential side effects and ensure proper dosage.