Tamsulosin can lower blood pressure. Usually this medication may be taken with a drop in blood pressure, increased heart rate, dizziness, vomiting and other discomforts. Therefore, tamsulosin can lower blood pressure when taken, but it cannot be used as a hypertension medication. Tamsulosin can block the sympathetic α1 receptor, thus relaxing the urethral smooth muscle, leading to a decrease in urethral pressure, and can effectively improve urination disorders. It is mainly used for the relief of benign prostatic hyperplasia caused by urinary disorders and other diseases. Secondly, it is prohibited for those who are allergic to the components of the drug and those with renal insufficiency, and liver and kidney functions and blood pressure should be monitored during the course of taking the drug, while pregnant and lactating women should use the drug under the guidance of a doctor. If there is a drop in blood pressure after taking Tamsulosin, it is recommended to consult a doctor in time for treatment.