The company had posted a net profit of Rs 116.88 crore during the same period of the previous fiscal.
Net sales rose to Rs 646.15 crore during the quarter under review as against Rs 630.63 crore during the same period of the previous fiscal, GlaxoSmithKline Pharmaceuticals said in a filing to the BSE.
"The quarterly performance was impacted by supply constraints," it added.
GlaxoSmithKline Pharma shares ended at Rs 3,254 a piece on the BSE, down 0.36 per cent from its previous close.