Vyvanse, also known as lisdexamfetamine, is a central nervous system medication that influences chemicals found in the brain and nerves, so to work on hyperactivity and impulse control. Here are some of the uses of Lisdexamfetamine. This medication is used to treat attention deficit hyperactivity disorder (ADHD), which occurs in adults and children who are at least 6 years of age. In addition, it is also used to treat critical and moderate eating disorders in adults. However, this medicine is not to be used for weight loss or obesity. Other uses of Vyvanse include increasing the ability to pay attention, stay focused and stop fidgeting. The prescription of this medicine is known to work by restoring the balance of neuro transmitters in the brain.