Dear Doctor, Recently I was observed, when Im doing sexual intercourse, my penis erection level is not up to my satisfiction and it is soft, I was approached one doctor, he advised me to go for Penile Doppler Test, the result shows, there is some blockage in the blood path which is connection to penis (pressuor of blood to penis is slow) and he is advised me to take Caverta 50 Mg before going for sex, but when I use this tablet, Im having 100% satisfaction, but what could be the permenant solution for this problem. Please advise