Tamsulosin Hydrochloride Extended-Release Tablets should be taken by mouth in a single, complete dose after a meal, not chewed or crushed. Tamsulosin Hydrochloride Extended-Release Tablets is a sympathetic α1 receptor blocker, which acts on the tissues of the lower urinary tract after entering the human body to relax the smooth muscles of the bladder, prostate and urethra, and can be used to alleviate the symptoms associated with dysuria such as frequency of urination, increase in nocturia, and difficulty in urination caused by prostatic hyperplasia. Adverse reactions such as nausea, vomiting, dizziness, rash, loss of appetite, tachycardia, postural hypotension, and elevated AST and LDH values may occur after administration. The drug must be closely monitored for changes in blood pressure when combined with antihypertensive drugs. Patients using the drug for a long period of time should regularly check the liver function and other indicators. The drug is prohibited for those who are allergic to the drug; renal insufficiency is prohibited. Use with caution in patients with postural hypotension. Contraindicated for pregnant and lactating women, children. If you need to use the drug patients, please under the guidance of the doctor strictly follow the instructions of the doctor to take medication, do not self-medication.