Generics American regulator the US Food and Drug Administration has issued warning letters to India’s top drug firms such as Dr Reddy’s, Sun Pharma, Lupin, Glenmark Pharmaceuticals, Biocon, Torrent Pharma, Aurobindo and Cadila, among others. Facing the heat, drug majors appear to be cleaning up their act, reports The Pharma Letter’s India correspondent. 29 January 2020