Fildena 100 pill is a popular and successful treatment for erectile dysfunction. Sildenafil citrate is the main active ingredient included in this pill. It helps in erectile dysfunction by blocking substances that cause a low erection. This drug improves blood flow to the penis. More blood flow to the penis means more erection. This drug has been shown to be more effective if taken sexually stimulated with water 30 minutes before sexual activity. Do not use alcohol and fatty food while using this pill, because it is effectively reduced.