The drugs commonly used to treat prostate enlargement and relax the smooth muscle of the urethra around the prostate are tamsulosin hydrochloride extended-release capsules, tamsulosin hydrochloride capsules or terazosin or doxazosin tablets. The main action is on the smooth muscle, which makes the smooth muscle diastolic, the resistance of the urethra decreases, the patient can appear to urinate more smoothly, but also acts on the smooth muscle of the blood vessels, after taking can also appear vasodilatation, resulting in the patient dizziness, blood pressure decreased. Blood pressure needs to be monitored while taking the drug, and it should not be taken by patients with low blood pressure or those who work at height, otherwise occupational risks may occur. Regular review is also required while taking the medication, which needs to be combined with other medications if necessary. The actual fact is that these drugs only act on the smooth muscle, not on the glandular cells of the prostate, and do not appear to have a reduction in the size of the prostate, if necessary, you need to assist finasteride and other drugs for comprehensive treatment.