Fildena CT 50 contains Sildenafil Citrate, the active ingredient also found in Viagra. It belongs to a class of drugs called PDE5 inhibitors, which help relax blood vessels and increase blood flow to specific parts of the body—in this case, the penis—to help achieve and maintain an erection. The “CT” in Fildena CT 50 refers to its chewable tablet form, which allows faster absorption into the bloodstream compared to traditional tablets.