Furosemide is generally used as a diuretic and is clinically used in the treatment of heart failure and edematous disorders. Furosemide belongs to diuretics, the main target of action is the renal medullary collaterals of the ascending thick segment, can promote the excretion of sodium. Furosemide’s main clinical indication is to reduce edema, and at the same time, it has the effect of lowering blood pressure, which can be used in the treatment of heart failure, edematous diseases, hypertension and other diseases. 1. Patients with heart failure are often accompanied by water and sodium retention, requiring long-term oral diuretic therapy, furosemide is one of the common drugs. 2. Furosemide can also be used in the treatment of edematous diseases, such as kidney disease, liver disease can lead to edema, you can use furosemide to reduce the symptoms. 3. Furosemide can reduce excess water in the body through diuretic effect and can be used to lower blood pressure. Adverse effects of furosemide include headache and dizziness, nausea and vomiting, abdominal pain and diarrhea, muscle tonus, electrolyte disorders, etc. Furosemide is contraindicated in patients who are allergic to the components of the drug. Furosemide may cause dizziness and tinnitus in the process of use, long-term use can lead to electrolyte disorders, under the guidance of a physician to use the drug.