Sildenafil is greatest often called a remedy for ED — The lack to receive or hold an erection. Sildenafil is supposed to be taken ahead of having sex, With all the knowledge that its effects final only a few hrs.??? ???? ??? ??. ???? (??? ???)? ?? ??? ??? ???? ?.???? ?? ???? ??? ??? ???? ?? ??? ??? ?? ??? ?? ???? ??? ?????.Cialis stays in the sys