Drug Library and Reference - Z

The drkoop.com URL and web site are not associated with C. Everett Koop, M.D., former Surgeon General of the United States.

By using this service, you accept our Terms of Use. Please read them. The consumer health information on drkoop.com is for informational purposes only and is not a substitute for medical advice or treatment for any medical conditions. You should promptly seek professional medical care if you have any concern about your health, and you should always consult your physician before starting a fitness regimen. Copyright © 2004-2008. The HealthCentral Network, Inc. All rights reserved.