Generic Cenforce 200 is simply an Indian-manufactured version of sildenafil citrate, the same active ingredient as Viagra. In India, Pfizer’s patents on sildenafil citrate were never enforced, and as a result, generic products like Cenforce 200mg have been widely available for many years—essentially since shortly after Viagra’s introduction in 1998. Globally, the timeline for generic sildenafil followed this progression: 2012–2013: Pfizer's Viagra patent expired in major markets like the EU (June 2013) and Canada (Canada's Supreme Court decision in November 2012), allowing generic production to begin. December 2017 (U.S.): Pfizer settled with Teva, permitting the first FDA-approved generic sildenafil to enter the U.S. market on December 11, 2017, ahead of the final April 2020 patent expiry.
