<s>[INST] I m 87, have long-since been unable to attain an erection, think I recall I had prostate removed, twice removed cancerous portions of colon, ending up with a Colostomy ( which I handle well and with which I have no problems .. in short, this old guy ( me ) thinks ( though he will check with his GP and other MDs ) it s time to quit my one-a-day Tamsulosin / Flomax. I read where dizziness and related side effects can be connected. [/INST] Thanks for your question on Chat Doctor. I can understand your concern. No, you should not discontinue tamsulosin. Tamsulosin is good to prevent urinary symptoms like Chat Doctor. So continue with tamsulosin. Your erectile dysfunction is mostly due to lack of testosterone. Old age plus prostatectomy cause testosterone deficiency. No treatment is required because of your age (87 years). Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>