Lisdexamfetamine, sold under the brand name Vyvanse among others, is a medication that is used to treat attention deficit hyperactivity disorder (ADHD) in people over the age of five as well as for moderate to severe binge eating disorder in adults.[1] Lisdexamfetamine is taken by mouth.[1][6] In the United Kingdom it is usually less preferred than methylphenidate.[7] Its effects generally begin within 2 hours and last for up to 12 hours.[1]