Fildena CT 100 belongs to a class of medications known as PDE5 inhibitors, which work by increasing blood flow to the penis, thereby facilitating erections. By inhibiting the enzyme PDE5, Fildena CT 100 allows for the accumulation of cyclic guanosine monophosphate (cGMP), a chemical that relaxes smooth muscles and dilates blood vessels in the penis, leading to improved erectile function. Clinical studies have demonstrated the efficacy of Fildena CT 100 in treating erectile dysfunction in men without cancer, with a significant improvement in erectile function reported in many cases.