Indapamide tablets have a weak antihypertensive effect and generally need to be used in conjunction with other medications. Indapamide tablets are indicated for use in conjunction with perindopril in patients whose blood pressure is not fully controlled by perindopril alone. When indapamide is used, it is usually used in combination with sartan, and can also be used in combination with perindopril or irbesartan to exert a synergistic antihypertensive effect, which will be more effective. When taking antihypertensive drugs, it is difficult to evaluate the efficacy alone, and the most appropriate antihypertensive drug should be selected according to the actual situation of the patient. Indapamide is suitable for people with mild hypertension, but people with mild hypertension are prone to hypokalemia if they take indapamide alone for a long period of time, which is manifested as weakness, bloating, constipation, panic, palpitation, and even life-threatening. Therefore, indapamide tablets are best not used alone when lowering blood pressure. Occasionally, it may cause allergy, hypokalemia and hyponatremia. It is contraindicated in cases of hypersensitivity to sulfanilamide, severe renal insufficiency, hepatic encephalopathy, and hypokalemia. This drug should be taken under professional medical supervision, and blood potassium, sodium and urine should be monitored regularly during the period of administration, with attention to maintaining water-electrolyte balance and timely potassium supplementation.