The efficacy of Finasteride Tablets 5mg is mainly used for the treatment of benign prostatic hyperplasia with obvious symptoms, which can improve the symptoms as well as reduce the size of the enlarged prostate, and reduce the need for acute urinary retention as well as the risk of transurethral resection of the prostate and prostatectomy. Finasteride Tablets 5mg, a specific type II 5α-reductase competitive inhibitor, inhibits the conversion of peripheral testosterone to dihydrotestosterone and reduces the levels of dihydrotestosterone in the blood and tissues such as the skin and prostate. Prostate growth and development and benign hyperplasia are dependent on dihydrotestosterone. Finasteride inhibits prostate hyperplasia by lowering dihydrotestosterone levels in prostate tissues and blood, thereby improving the clinical symptoms associated with benign prostatic hyperplasia. Maintenance use of finasteride also reduces the size of the prostate by up to 20%. Adverse reactions such as decreased libido, impotence, and breast discomfort may occur with the use of this drug. In case of adverse reactions, patients are advised to visit a hospital. Those who are allergic to any component of this drug, as well as women who are pregnant and may become pregnant need to disable it. In addition, patients are advised to use Finasteride Tablets 5mg under the supervision of a doctor and not to use it privately.