Tamsulosin hydrochloride is a highly selective alpha receptor blocker, which is mainly used for symptoms such as dysuria due to prostate hyperplasia, such as frequent urination, increased nocturia, and difficulty in urination. It achieves its therapeutic purpose by improving the function of smooth muscles in the urethra, bladder neck, and prostate area, and cannot reduce the size of hyperplastic prostate glands. Therefore, it is usually indicated for patients with mild to moderate prostate hyperplasia, as well as for patients who do not have severe urinary difficulties, and should not be taken alone if severe urinary retention occurs. It is usually taken orally as a 0.2mg dose once a day before bedtime for adults, and the dose can be increased or decreased at your discretion depending on your age and symptoms. Tamsulosin hydrochloride works by inhibiting alpha receptors, which can be highly selectively inhibited due to the presence of many alpha 1A receptors in the urethra, bladder neck, and prostate, thus relieving the symptoms of dysuria.