Fildena 100mg is a medication commonly used to treat erectile dysfunction (ED). Its active ingredient is sildenafil citrate, which is also found in Viagra. It works by increasing blood flow to the penis, helping achieve and maintain an erection when sexually aroused. Fildena can interact with other medications, especially nitrates used for chest pain or certain other medications for high blood pressure. Be sure to inform your healthcare provider about all the medications you’re taking.