How Do Diuretics Affect Fluid Balance

Diuretics, sometimes called water pills, help rid your body of salt (sodium) and water. Most of these medicines help your kidneys release more sodium into your urine. The sodium helps remove water from your blood, decreasing the amount of fluid flowing through your veins and arteries. This reduces blood pressure.

How do diuretics affect hydration?

Diuretics in general trigger your kidneys to release sodium in your urine, which then takes water from your blood, helping you urinate out excess water. With less fluid in your veins, your blood pressure decreases, the medical center explains. As such, these can also contribute to dehydration.

What do diuretics do to total fluid volume?

A diuretic is a compound that increases urine volume.