Long-term application of tamsulosin can cause damage to the central nervous system, gastrointestinal tract, liver and cardiovascular system. Tamsulosin is clinically used as a drug for the treatment of benign prostatic hyperplasia. Long-term application can cause adverse reactions such as central nervous system damage (e.g., dizziness, fatigue, etc.), cardiovascular system damage (e.g., drop in blood pressure, etc.), gastrointestinal tract damage (e.g., loss of appetite, nausea, vomiting, etc.), and liver damage (e.g., elevation of aminotransferases). It is contraindicated in people who are allergic to tamsulosin. Precautions for use: it should be used with caution in patients with upright hypotension, coronary artery disease, renal insufficiency; it should be used in reduced dosage in the elderly population; it is not recommended to be used alone for severe urinary retention; it should be used with regular blood pressure testing, rechecking of hepatic and renal functions, and so on. For people who need to use Tamsulosin, they should use the drug under the guidance of a professional doctor, do not apply without authorization.