doc,i have a problem in my penis,i have a strong urge to make sex with my partner but my penis wont erect as it should be,i am now 56 yo,what should be the remedy,please give me some advise or a med to take for erection not so expensive as i am only a low income person,i do hope for your very kind advice,i thank you doc,my name is conrado g bungay,a filipino,in northern philippines,