NEW YORK This agency pulls no punches. The merest blip of a post-marketing serious adverse event report, and the agency is acting sooner than later. Because when you get right down to it, out of all the prescriptions for Xenical (approved for sale April 1999), out of all the people who have tried Alli when the ingredient orlistat was switched over the counter (in February 2007), there have been as many adverse events reported in the United States around orlistat and liver injury as there have been Boston Red Sox championships in the past 70 years: two.