PRESS RELEASE



Sanofi's Chattem Acquires Over-the-Counter Antacid Rolaids® -- Product acquisition further strengthens Consumer Healthcare Division of Sanofi US --

Paris, France - January 7, 2013 - Sanofi (EURONEXT : SAN and NYSE : SNY) today announced that its US Consumer Healthcare Division, Chattem, Inc., completed the acquisition of the worldwide rights to the Rolaids® brand from McNeil Consumer Healthcare Division of McNEIL-PPC, Inc.

"The addition of Rolaids represents a rare opportunity to obtain an iconic brand that we believe will respond positively to our proven approach of growing brands through innovation and advertising," said Zan Guerry, Chief Executive Officer, Chattem. "We are primed to leverage the Rolaids market opportunity to drive incremental growth and take the brand to a new level."

Rolaids is an over-the-counter antacid that helps relieve heartburn and acid indigestion. The product was first introduced in 1954 and over the years it has been a top selling gastro