Dr.Reddy's Laboratories received tentative approval for Sildenafil Citrate tabletsDr.Reddy's Laboratories received tentative approval for Abbreviated New Drug Application (ANDA) from the US Food and Drug Administration for Sildenafil Citrate tablets in multiple strengths of 25 mg, 50 mg and 100 mg tablets.The drug was originally developed and marketed by the Pfizer under the brand name drug Viagra. It is indicated for the erectile dysfunction. According to Pfizer Annual report, the product global sales grew by 3% YoY to USD 1.98 billion for twelve months ended December 2011.Notably, Global players such as Teva Pharmaceuticals, Mylan and Apotex already received the tentative approval for the Abbreviated New Drug Application (ANDA) from the US FDA.