Tamsulosin extended-release tablets belong to the alpha receptor blocker, which has the effect of improving the urinary obstruction caused by prostate hypertrophy. The drug is mainly through selective blockade of smooth muscle α1 receptors in the bladder neck and the glands and dorsal membrane of the prostate gland, reducing the tension of smooth muscle, thus reducing the resistance of the lower urinary tract and improving the urinary obstruction caused by prostatic hypertrophy. Common symptoms of patients include frequent urination, increased nocturia, and difficulty in urination. Currently, common clinical side effects include gastrointestinal discomfort, such as nausea and vomiting and loss of appetite. Long-term use of this drug may lead to liver function abnormalities in some patients. Therefore, for patients taking the drug for a long period of time, it is recommended to check the liver function regularly. In addition, some patients may experience retrograde ejaculation, which will be fine after stopping the drug. It is forbidden for people who are allergic to this product, children and other people. The drug is a prescription drug and should be used in strict accordance with medical advice.