Potassium citrate can be taken for 1~2 weeks to expel the stones, the specific time of stone expulsion is not fixed, need to be combined with the area of the stones, the degree of difficulty of stone expulsion to judge. Although the drug has a certain effect, but it is not immediate, most of the people in the taking of stone removing drugs after 1 ~ 2 weeks before the gradual effect of the situation of stone removal, during this period you can drink more water, do some exercise. There are many ways to treat stones, in addition to medication, you can also use extracorporeal shock wave lithotripsy, percutaneous nephrolithotripsy and so on. The causes of stones are more, there are also differences in the use of drugs, after taking potassium citrate, nausea and vomiting, hyperkalemia, fatigue, arrhythmia and a series of conditions such as the appearance of these adverse reactions, you can promptly hospital consultation. Patients with oliguria or azotemia, acute dehydration, hyperkalemia should avoid taking this drug, and it is recommended to follow the doctor’s prescription for medication. If there are any uncomfortable symptoms, you need to consult a doctor in time.