Mumbai, Nov. 26 -- Zydus Lifesciences Ltd gained for a third straight session today. The stock is quoting at Rs 942.5, up 1.51% on the day as on 12:49 IST on the NSE. The benchmark NIFTY is up around 1.08% on the day, quoting at 26165.55. The Sensex is at 85506.55, up 1.09%. Zydus Lifesciences Ltd has slipped around 7.04% in last one month. Meanwhile, Nifty Pharma index of which Zydus Lifesciences Ltd is a constituent, has slipped around 1.96% in last one month and is currently quoting at 22590.95, up 0.7% on the day. The volume in the stock stood at 5.83 lakh shares today, compared to the daily average of 10.11 lakh shares in last one month. The benchmark December futures contract for the stock is quoting at Rs 949.35, up 1.75% on the da...