Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Atrial Fibrillation Health Center

Atrial Fibrillation Overview

Atrial fibrillation is an irregular heartbeat that increases the risk of stroke and heart disease. Signs include dizziness, weakness, and fatigue. Treatment involves medication and lifestyle changes, and sometimes procedures such as cardioversion, ablation, pacemakers, or surgery.

Latest Headlines
Most people should try medication plus lifestyle changes first, experts say


Atrial fibrillation is often discovered during routine medical checkups, because many people don't have symptoms. Others may notice an irregular pulse but don't have other symptoms.

Mild symptoms of atrial fibrillation may occur immediately. More serious problems may occur after the start of atrial fibrillation and over the course of several days. So it is important to identify symptoms and get treatment as soon as possible.

Today on WebMD

pacemaker next to xray
Ablation, cardioversion, pacemaker, and more.
human brain
What you need to know.
woman doing yoga
Tips for easing stress.
fish and vegetables
How to eat to protect your heart.
Omega 3 Overview Slideshow
At Risk for Heart Disease
Recognizing Womens Heart Symptoms
Simple Steps to Lower Cholesterol

Resolved To Quit Smoking
Lowering Blood Pressure Slideshow
Heart Disease And Ed
Atrial fibrillation

WebMD Special Sections