Furosemide, a diuretic, is included in World Health Organization's list of essential medicines and considered one of the key medications in a basic health system. Furosemide is a diuretic which prevents the reabsorption of salt in the kidney and removes it from your body along with urine. Furosemide is most commonly used in the treatment of fluid retention or edema which occurs in patients suffering from congestive heart failure, liver disease, lung disease; or nephritic syndrome, a disease of the kidney. Furosemide is often used for the treatment of high blood pressure or hypertension. Furosemide is a loop diuretic that causes you to make more urine. It is used to treat edema in people who have kidney disorder such as nephrotic syndrome, kidney disease, liver disease, or congestive heart failure. This can help by lessening symptoms like shortness of breath and swelling in your abdomen, legs and arms. This drug can also be used to treat high blood pressure. It works by preventing your body from absorbing too much salt and instead enables you to pass the salt in your urine. Furosemide can also be used to decrease a high level of calcium that is in the blood, also known as hypercalcemia.