Hi thank you for querry. As you mentioned your symptoms and medicine used, the above mentioned medicine in which carvedalol is a beta blocker which cause erectile dysfunction,alonh with sertaline that also cause ejaculatory disturbances. bupropion increase the libido in some reports and propafenon decrease the libido. the second thing regarding your stream of urine that may be due to enlargment of prostate due to age factor, it also include frequency,urgency,poor stream. if such patient come to me i will advise DRE(digital rectal examination) Urine complete ultrsound especially the size of prostate and residual urine volume. So its bettet to consult a urologist for your symptoms. hope the answer will help you. wish you a good health.