Fildena 100 mg is a widely used medication for treating erectile dysfunction (ED) in men. It contains sildenafil citrate, the same active ingredient found in Viagra, and is known for delivering quick and reliable results for those struggling with achieving or maintaining an erection. Sildenafil citrate is a PDE5 inhibitor that works by increasing blood flow to the penis during sexual stimulation. It relaxes the blood vessels and enhances circulation, allowing men to achieve a firm and sustained erection when aroused.