SILDENAFI 100 MGas  a treatment for impotence and aids the achievement and sustainment of a firm erection. The drug  works in a complex way by maintaining optimal levels of cyclic guanosine monophosphate (cGMP), which ensures good blood flow to the penile tissue, called corpus cavernosum. Sufficient blood flow to that area is necessary for producing an erection. ildenafil 100mg is taken once a day, usually half an hour before having a sexual intercourse.