Clonazepam, also known as dihydroclonazepam, also known as hydrochlorothiazide, is mainly used in the treatment of various edematous diseases. This is because this drug acts on the renal tubules of the kidneys to help excrete excess water and sodium from the body, reducing and alleviating edema. If used in congestive heart failure, cirrhotic ascites, nephrotic syndrome and edema caused by acute and chronic nephritis, and also in the early stages of chronic renal failure. In the treatment of hypertension, it is often used in combination with other drugs, but this drug is often used at half the dose in the treatment of hypertension, mainly in the treatment of primary hypertension. It should also be noted that the side effects of this drug are closely related to the dosage. If the dosage is too large, it can bring about water and electrolyte disorders, such as the so-called hypokalemia, and in addition, if used for a long time, it can damage the renal tubules and cause an increase in uric acid. Therefore, if the indications for the use of Clonazepam are mastered and the dosage is controlled under the guidance of the doctor, it can help to reduce the symptoms and control the blood pressure.