After Goldman Sachs tossed cold water on the company's market-beating performance by initiating a sell recommendation today, shares in Valeant Pharmaceuticals (NYSE: VRX) lost 10.9% of their value today.Last year was a successful one for Joseph Papa, Valeant's CEO. Papa inherited a company struggling to overcome a host of challenges stemming from a relationship with its specialty distributor that proved to be all too close for comfort and a mountainous debt load his predecessor amassed.IMAGE SOURCE: GETTY IMAGES.Continue reading