Tamsulosin extended-release capsules are indicated for dysuria caused by benign prostatic hyperplasia. This drug has a highly selective blocking effect on sympathetic α1 receptors, urethra, bladder neck and prostate smooth muscle, by making the smooth muscle become relaxed and reducing the prostate pressure in the urethral pressure curve, to improve the purpose of urination disorders. Tamsulosin Hydrochloride Extended-Release Capsules should be taken orally with meals, and the dosage should be increased or decreased according to the patient’s age and different symptoms. During the use of the drug, some patients occasionally see dizziness, hobbling sensation, rapid heart rate, blood pressure drop, nausea and vomiting, stomach upset, abdominal pain, loss of appetite, swelling and other adverse reactions. Tamsulosin Hydrochloride Extended-Release Capsules are contraindicated in patients who are allergic to the drug, renal insufficiency, pregnant women, children, lactating women and other patients. Coronary heart disease as well as postural hypotension, need to use this drug with caution. When combined with antihypertensive drugs, it is necessary to pay attention to the changes in blood pressure, this drug should not be used in excess, so as not to cause a drop in blood pressure. Tamsulosin Hydrochloride Extended-Release Capsules must be used under the guidance of a medical professional, and must not be used at will.