Staying Healthy

What you need to know about: Diuretics

Print This Page

Diuretics are usually prescribed as a first-line treatment for high blood pressure, though many people require additional drugs for blood pressure management, such as beta blockers, ACE inhibitors, or angiotensin-receptor blockers (ARBs). Diuretics help lower blood pressure by reducing the amount of sodium and water in the body—the lower the volume of fluid in the bloodstream, the less pressure there is on the walls of the arteries. They're also prescribed for kidney disorders, liver disease, and fluid retention caused by heart failure.

There are three main types of diuretics

So how do you know which is right for you?

Cardiologist Dr. Thomas Lee, co-editor in chief of the Harvard Heart Letter, says he starts most diuretic therapies with 12.5 milligrams of a thiazide diuretic. "It's unlikely to cause potassium or other problems. If I have to go up to get good blood pressure control, I am more likely to go to a combination with one of the potassium-sparing drugs. I don't use furosemide for blood pressure because it doesn't last long," he explains.

To continue reading this article, you must log in.

Subscribe to Harvard Health Online Plus (HHO+) to unlock expert-backed health insights, personalized tools, and exclusive resources to feel your best every day.

Here’s what you get with your HHO+ membership:

  • Unlimited access to all Harvard Health Online content
  • 4 expertly curated newsletters delivered monthly
  • Customized website experience aligned to your health goals
  • In-depth health guides on topics like sleep, exercise, and more
  • Interactive features like videos and quizzes
  • Members-only access to exclusive articles and resources
Learn more about the benefits of features of HHO+ »

I’d like to subscribe to HHO+ for $4.99/month to access expert-backed content to help make smart, informed decisions about my well-being.

Sign Me Up

Already a member? Login ».

Print This Page

Disclaimer:

As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles.

No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.

Free Healthbeat Signup

Get the latest in health news delivered to your inbox!

Sign Up
Harvard Health Publishing Logo

Thanks for visiting. Don't miss your FREE gift.

10 Ways to Fight Chronic Inflammation is yours absolutely FREE when you sign up to receive health information from Harvard Medical School.

Sign up to get tips for living a healthy lifestyle with ways to keep inflammation under control … lessen digestion problems … learn simple exercises to improve your balance…understand your options for cataract treatment … all delivered to your email box FREE.

Harvard Health Publishing Logo

Stay on top of latest health news from Harvard Medical School.

Plus, get a FREE copy of the Best Diets for Cognitive Fitness.

Harvard Health Publishing Logo

Stay on top of latest health news from Harvard Medical School.

Plus, get a FREE copy of the Best Diets for Cognitive Fitness.