Tamsulosin relaxes the muscles of the prostate and the urinary tract. Tamsulosin is an effective treatment for problems such as incontinence and urination. amsulosin belongs to a group of medicines called alpha blockers. It's used to treat men with symptoms of an enlarged prostate (benign prostate enlargement). It's also occasionally taken to treat kidney stones and prostatitis. Alpha blockers reduce blood pressure by relaxing your blood vessels so blood can pass through them more easily. Tamsulosin helps to reduce the symptoms of an enlarged prostate gland by relaxing the muscle around the bladder and prostate gland so you can pee more easily. (Brand may vary)