Amiloride belongs to the group of medicines known as potassium-sparing diuretics. A diuretic is a medicine which increases the amount of urine that you pass out from your kidneys. They are often referred to as 'water' tablets. Amiloride is called a potassium-sparing diuretic because, unlike some other diuretics, it does not cause your body to lose potassium. It is used to treat high blood pressure (hypertension) and also water retention (oedema).
This is a companion discussion topic for the original article at https://patient.info/medicine/amiloride-tablets-and-liquid-medicine