The Food and Drug Administration approved Vyvanse, also known as lisdexamfetamine, agency spokeswoman Susan Cruzan said. The drug is made by Shire PLC. Shire hopes the drug will extend its lucrative ADHD franchise once its top-selling Adderall XR begins facing competition from lower-priced generic versions in 2009. Shire plans to move patients from the older to the newer drug at the time, company spokesman Matt Cabrey said this week. (more…)