75% of drugs in FDA Orange Book have generic counterparts

As of June 2005, there were 11,167 drugs listed in the FDA's
Orange Book, and about 8,400 had generic counterparts.

Brian Williams on NBC on Dec. 21 had another lament about confusion over Medicare Part D. It would seem that a database correlating the 40-60 plans with the (less than or equal to) 11,000 drugs could solve this "problem" pretty quickly.