Bayer has been sued by two Pennsylvania pension funds and accused of misrepresenting the safety and effectiveness of the Yaz contraceptive to boost sales, according to a Bloomberg report. The lawsuit claims that Bayer unlawfully promoted Yaz and Yasmin from March 2006 to March 2009 by hiding the risks of the birth control pills. The risks that were concealed include blood clots, heart attacks, pulmonary embolisms and gallbladder disease. The complaint was filed by the Philadelphia Firefighters Union Local No. 22 Health and Welfare Fund and the American Federation of State, County and Municipal Employees, District 47 Health and Welfare Fund. The suit was filed in the U.S. District Court, Eastern District of Pennsylvania (Philadelphia).