The company had posted a net loss of Rs 158.94 crore during the October-December period of previous fiscal.
Net sales of the company declined to Rs 2,587.59 crore, as compared to Rs 2,858.96 crore during the same period of 2013-14, Ranbaxy Laboratories said in a statement.
Ranbaxy shares were trading at Rs 686.60 apiece, down 2.87 per cent, on the BSE.