Fildena 200 is one medication used to treat erectile dysfunction. The active ingredient, sildenafil citrate, belongs to the pharmacological class of phosphodiesterase type 5 inhibitors. By increasing blood flow to the penis, this medication helps a man get and maintain an erection when he is sexually aroused. Always consult with your doctor before starting or stopping any medicine. You should inform your doctor about all other medications you take, including over-the-counter medications that could exacerbate Fildena’s effects and dietary supplements such as vitamins, minerals, and herbal remedies so that they can alert you to any possible drug interactions.