Bangalore: After having healthy trading in later part of the day, Zandu Pharma ended the trading with gains of 834.45 (18.38 percent). The company had opened its stock around two points down to its previous close of 4,539.85, but with investors' faith, managed to end at 5,374.30. In all 69,197 shares were traded throughout the day with current P/E ratio at 10.83. The stock has 52-weeks high value of 12,800 and low of 4,000. The 52 week stock price chart is on the left. Zandu Pharmaceutical Works is an India-based pharmaceutical company. It is an Ayurveda healthcare company. Using approximately 200 medicinal plants and their extracts, Zandu produces a range of over 300 health promoting products. The products are manufactured at several plants across India. The company operates through two segments: Pharmaceuticals and Chemicals. In October 2008, Emami acquired a 22.82percent interest in Zandu. As a result, Emami holds a 50.33percent interest in Zandu. Other pharmaceutical companies also had positive trading on the bourses. Ind Swift Laboratories, Surya Pharmaceutical and Lincoln Pharmaceutical gained 2.87, 16.07 and 5.64 percent, respectively.