Diuretics are a class of medicines that are mainly prescribed for high blood pressure, kidney disease, heart failure and liver cirrhosis. They help in elimination of sodium and water from the body, and therefore are also called ‘water pills’. They act on the kidneys and promote urine formation. When the kidneys excrete sodium and water, the amount of fluid that flows through the blood vessels also decreases. This releases pressure from the artery.
There are different classes of diuretics available and they act through different mechanisms but ultimately cause excretion of water and salt from the body.