Fildena CT 50 and Sildenafil are connected like this: What’s the same Fildena CT 50 contains sildenafil citrate as its active ingredient So in effect, it delivers the same drug (sildenafil) used for erectile dysfunction What’s different Sildenafil = the active medicine molecule (generic drug name) Fildena CT 50 = a brand formulation that contains sildenafil “CT” means chewable tablet, which: dissolves faster than regular tablets may act slightly quicker for some people Different brands may also vary in fillers, taste, and absorption speed Simple way to think about it Sildenafil = the ingredient Fildena CT 50 = one specific product that delivers that ingredient Bottom line They are not identical products, but Fildena CT 50 is essentially sildenafil in a chewable form. If you want, I can compare it with other sildenafil brands (like Viagra, Fildena, Cenforce) so you can see differences clearly.