It can be used to treat retention of urine (dribbling of urine or inability to urinate) due to deficiency of kidney qi, dampness and heat combined with obstruction of blood stasis, and there is no fixed time limit for taking it; it can be taken for 7 days first, and the doctor will decide whether or not to continue to take it according to the effect. Retention of urine is composed of Qian Cao, Shan Ci Mushroom, Boneset, Succinum, Hai Jin Sha and Motherwort, which are effective in clearing heat and diuresis, warming the kidneys and transforming qi, dispersing knots and relieving pain, and invigorating blood circulation and removing blood stasis (to promote the operation of blood and eliminate blood stasis in the body). It can be used to treat retention of urine caused by dampness-heat, stagnation of blood stasis and insufficiency of kidney qi. Specific symptoms can be seen such as lumbago, weakness of legs, urinary urgency, frequent urination, pain during urination, thin urine like a thread, pain in contracture of abdomen, etc. It can also be used to treat prostatic hyperplasia with the above mentioned symptoms. Adverse reactions of urine retention Shu Tablet may occur after taking the drug, such as thirst, stomach discomfort, mild diarrhea and other discomforts, contraindications are not yet clear. It is not certain how long you need to take the medicine, you can take it for a week, if the effect is better then you can continue to take it under the guidance of the doctor, but due to the large differences in individual conditions, there is no uniform time requirements for taking the medicine.