During her strip dance scene in the bedroom, Katherine Heigl accidentally revealed a side boob and nipple which was more than she intended, but producers kept it in the scene. She also revealed her butt when she pulled down her panties, which she had agreed to do for the scene.
Although unrelated to Steven Soderbergh's movie of the same name, both movies deal with the side effects of a fictitious anti depressant and the way the pharmaceutical industry deals with such issues.