Generic drugs are medications that contain the same active ingredients as the brand-name versions but are sold under their chemical name rather than the brand name. They are marketed once the patent for the branded drug has expired, allowing other companies to manufacture and sell the same formulation. In the case of Cenforce, generic versions contain Sildenafil, which is chemically identical to the branded version, meaning they work in the same way.
https://www.flatmeds.com/product/cenforce/