Bayer’s cancer pill Nexavar shows promise in treating breast tumors, the second-most common form of cancer. Nexavar, when combined with standard chemotherapy Xeloda, helped keep tumors in check for a longer time than that in a control group of patients receiving Xeloda only, according to Bayer. Nexavar is one of Bayer’s most promising drugs and is sold as a liver and kidney cancer treatment in more than 70 countries. Bayer is also pursuing the approval of the drug for use against lung tumors.