In 2010, more than 18 million prescriptions were written for Adderall, up 13.4 percent from 2009, according to <http://www.imshealth.com/portal/site/ims>IMS Health, which tracks prescription data. http://www.reuters.com/article/2012/01/01/us-adhd-adderall-shortage-idUSTRE80009E20120101 www.peoplewho.org