fildena ct 50 tablets are used to treat men suffering from erectile dysfunction. Sildenafil citrate is found in this medicine as an active ingredient. The effect of this drug lasts for 4 to 6 hours. And if the effect of this medicine lasts for more than 6 hours, seek the help of a doctor immediately. Take this medicine once a day. Do not take this medicine more than once. Do not use this medicine daily.