A furious employee is suing drugmaker Mallinckrodt over claims about its $38,000-a-dose blockbuster

Markets Insider The legal challenges atMallinckrodt, the drugmaker Wall Street loves to hate, are piling up.An employee ofthe company is suing the company and its leadership, alleging they lied about its dependence on its controversial blockbuster drug, Acthar. The employee bought shares aspart of the company's stock purchase plan, so he's alsosuing on behalf of the plan.The complaint is thatMallinckrodt's failure to disclose that up to 60% of Acthar's revenue comes from Medicare and Medicaid pu...