Speak with your healthcare provider prior to starting Fildena 50. The erectile dysfunction medication Fildena comes in different doses. Your doctor will prescribe a precise dosage of Fildena after making a diagnosis. As directed by your doctor, make sure you take Fildena. Before your sexual activity, you should take a tablet of Fildena one to three hours before your sexual intimacy. You should swallow the whole Fildena tablet without chewing or crumbling it. Take one Fildena tablet whole, along with a glass of water. You should take a tablet within 24 hours of your next dose if you miss a dose of Fildena.