 When Richwood acquired Rexar, the drug's name was changed from Obetrol to Adderall, and the drug was marketed for use in the treatment of Attention Deficit Disorder (in both children and adults).The old Rexar facility underwent extensive renovations and improvements, and continued to manufacture the drug for several years.During these years, the drug Adderall was identical to the most recent formulation of Obetrol, except that the inscription on the pills was changed to "AD".