Diuretics used to be known as water pills because they stop fluid collecting in your body and make you urinate more often. These are one of the most common treatments in heart disease. However, there have been only a few large studies into how effective they are in heart failure.

Researchers have combined the findings from smaller studies and concluded that diuretics extend life and improve symptoms of heart failure. Clinicians recommend them for people with heart failure who have signs of fluid retention, such as swollen ankles or breathlessness due to fluid in the lungs. Doctors will vary the dose of diuretic depending on your symptoms.

There are many different types of diuretic, but some of the most widely used for heart failure are bendroflumethiazide, chlorthalidone and furosemide.