CHATTANOOGA, Tenn.--(BUSINESS WIRE)--Chattem, Inc. (NASDAQ: CHTT) announced that, pursuant to the terms of the indentures (the “Indentures”) governing its 2.00% convertible senior notes due 2013 and 1.625% convertible senior notes due 2014 (collectively, the “Notes”), a Fundamental Change (as such term is defined in the respective Indentures) occurred on February 9, 2010 (the “Fundamental Change Effective Date”) as a result of the successful completion of the tender offer, commenced by River Acquisition Corp., a Tennessee corporation and an indirect wholly-owned subsidiary of sanofi-aventis, a French société anonyme, on January 11, 2010, for all outstanding shares of common stock of Chattem for $93.50 per share, net to the seller in cash, without interest and less any required withholding taxes pursuant to the Agreement and Plan of Merger, dated December 20, 2009, among Chattem, sanofi-aventis and River Acquisition Corp.