Questcor (UNKNOWN:QCOR.DL) is one of the most shorted health-care stocks on the market. Despite the company's profitability and strong cash flow, shares have taken a big hit as concerns arose regarding its top selling drug, Acthar. In this video, Motley Fool health-care analyst David Williamson reviews the bear case against Questcor and whether they are likely right in their assumptions. 

Brenton Flynn, David Williamson, and The Motley Fool have no positions in the stocks mentioned above. Follow David on Twitter @MotleyDavid

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