Fildena is a medication commonly used to treat erectile dysfunction (ED) in men. Its active ingredient is Sildenafil Citrate, which is also found in Viagra. Fildena works by increasing blood flow to the penis, helping to achieve and maintain an erection when sexually aroused. Fildena is a medication commonly used to treat erectile dysfunction (ED) in men. Its active ingredient is Sildenafil Citrate, which is also found in Viagra. Fildena works by increasing blood flow to the penis, helping to achieve and maintain an erection when sexually aroused. https://www.flatmeds.com/product/fildena-100/