Fildena 50 Mg may be take on an empty stomach or with a meal. It should be strictly taken as advised by your doctor. You should take about 1 hour before you plan to have s*x. The amount of time it takes to work varies from person to person, but it normally takes between 30 minutes and 1 hour. This medicine will only help you to get an erection if you are s*xually stimulated.