In general, it takes Fildena 200 roughly 30 minutes to start working. However, a number of factors, including your food, general health, drugs you're taking, underlying problems, and many more, might affect how long it takes for Fildena 200 to start working in your body and how long it lasts. The maker of the medicine advises using a maximum of 100 milligrammes of Fildena 200 per day to treat erectile dysfunction (ED).