Vyvanse is a prescription medication that contains the active ingredient lisdexamfetamine. It belongs to a class of drugs called central nervous system (CNS) stimulants and is primarily used for the treatment of attention deficit hyperactivity disorder (ADHD) in both children and adults.

Vyvanse is classified as a prodrug, which means it is inactive until it is metabolized in the body. After ingestion, Vyvanse is converted into dextroamphetamine, a substance that helps to increase the levels of certain neurotransmitters in the brain, such as dopamine and norepinephrine. This mechanism of action helps to improve attention span, impulse control, and reduce hyperactivity in individuals with ADHD.