Sildenafil citrate is the active ingredient in Fildena 100 mg. Sildenafil citrate was developed for the treatment of asthma, but it also helped men maintain erections. It was in this fashion that Viagra was born. This led to the development of several medications containing sildenafil citrate that are comparable to Fildena. Fildena 150 is an effective medication for male erectile dysfunction, impotence, and premature ejaculation. It might be challenging to get or keep an erection going if you’re under a lot of stress, really tired, have lousy habits, are addicted to drugs or alcohol, or make other poor lifestyle choices. Fildena is one medication that can be used to treat impotence.