Drug firm Zydus Lifesciences is recalling over 55,000 bottles of generic medication in the US market due to failed impurities specifications. As per the latest enforcement report by the US Food and Drug Administration (USFDA), Zydus Pharmaceuticals (USA) Inc is recalling 21,936 (30 count) and 33,096 (100 count) bottles of Colchicine tablets, which are used to treat gout.