Fildena 50 is a medication commonly used to treat erectile dysfunction (ED) in men. It contains Sildenafil Citrate, the same active ingredient found in other erectile dysfunction treatments such as Viagra. Fildena 50 works by increasing blood flow to the penis, helping men achieve and maintain an erection when sexually stimulated. Here's a detailed look at Fildena 50 and how it can help men dealing with ED.