I work here <a href=" http://gps.co.il/costco-redwood-city-pharmacy-fax.pdf#trim ">what is the efficacy of generic drugs</a> TPG, one of the most active private equity investors in healthcare, bought the drugmaker, formerly known as Axcan Pharma, for $1.3 billion in 2008 and merged it with Eurand Pharmaceuticals in 2011. The combined company was renamed Aptalis.