question: i am 69 years of age having ED problem, tried viagra 100mg before sex but could not get hard errection, igot my testrone level checked and found low, my blood pressure is almost normal most of the time, iam suffering from BPH now a days PSA is 4.5 and creatinine level is slightly higher its 1.3 and blood uea is at the border line its 19, my height is 5ft 5 inches, weight is 67 kgs Overall i am active and take regular morning walk for one hour, please do suggest me the medicine to cure this problem of errectile dusfunction, thanks Rgards K. akbar