[C]ontraceptives Yaz and Yasmin are the top-selling pharmaceutical line for Bayer HealthCare…But recently, the Yaz line’s image has been clouded by concerns from some researchers, health advocates and plaintiffs’ lawyers. They say that the drugs put women at higher risk for blood clots, strokes and other health problems than some other birth control pills do…Last month, the agency cited the company for not following proper quality control procedures at a plant that makes hormone ingredients…Bayer said that the company had been served with 74 lawsuits brought by women who charge that they developed health problems after taking Yaz or Yasmin. The company says it intends to defend itself vigorously against the suits.