Men who have experienced erectile dysfunction or impotence should take Fildena 100. This medication contains sildenafil citrate, which can assist a man in achieving and maintaining an erection. Men who have trouble erection during sex can use this medication. Your body can experience the effects of this medication for up to 4-5 hours. These medications aid in giving your penis the necessary hardness and erection. Females cannot use this medication effectively. Use of this medication with alcoholic beverages is prohibited.