Not Medical Advice:
Are you referring to Vyvanse? Vyvanse is approved by the Food and Drug Administration (FDA) to treat symptoms of attention-deficit hyperactivity disorder, including difficulty focusing and controlling actions. It contains the active ingredient Lisdexamfetamine.
Vyvanse works by changing the amounts of certain natural substances in the brain and is in a class of medications called central nervous system stimulants. It is considered to be an amphetamine derivative.
In the 2nd quarter of 2012 shares of the drug maker, Shire, soared after reports that revenue from Vyvanse jumped 43 percent to $266 million in just three months.