Health concern on your mind?
See what your medical symptoms could mean, and learn about possible conditions.
WebMD Pain Coach
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.
Drug Basics & Safety
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.
Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.
WebMD Mobile Drug Information App
WebMD cuts through the hype to reveal the best kept secrets for healthy hair.
Living Healthy Centers
Diet, Food & Fitness
Beauty, Balance & Love
WebMD Allergy App for iPhone
Protect yourself and your family by learning which health precautions and vaccines are advised for your destination.
Family and Pregnancy Centers
WebMD Pregnancy App for iPhone
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.
WebMD Experts & Blogs
Got a health question? Get answers provided by leading organizations, doctors, and experts.
My WebMD Sign In
If you select "Keep me signed in on this computer", you can stay signed in to WebMD.com on this computer for up to 2 weeks or until you sign out. This means that a cookie will stay on your computer even when you exit or close your browser which may reduce your levels of privacy and security. You should never select this option if you're using a publicly accessible computer, or if you're sharing a computer with others. Even if you select this option there are some features of our site that still require you to log in for privacy reasons.
Why should Isign up for WebMD?
With a WebMD Account you can:
Put the pointer on the gauge of the peak flow meter to 0 or
the lowest number on the meter. In the photo, this is about
Attach the mouthpiece to the peak flow meter. Some meters
don't have a separate mouthpiece.
While standing, take a deep
Put the peak flow meter mouthpiece in your mouth, and close
your lips tightly around the outside of the mouthpiece. Don't put your tongue
inside the mouthpiece.
Breathe out as hard and as fast as you can for 1 or 2 seconds.
A hard and fast breath usually produces a "huff"
Check the number on the gauge, and write it down. This is your
peak expiratory flow (PEF). In the photo, the PEF is about
WebMD Medical Reference from Healthwise
©2005-2014 WebMD, LLC. All rights reserved.
WebMD does not provide medical advice, diagnosis or treatment. See additional information.