Reliable medical/health information online 

Produced by the National Library of Medicine, the world’s largest medical library, it brings you information about diseases, conditions, and wellness issues in language you can understand.

MedlinePlus offers reliable, up-to-date health information, anytime, anywhere, for free.

MedlinePlus has extensive information from the National Institutes of Health and other trusted sources on over 1000 diseases and conditions.  

There are directories, a medical encyclopedia and a medical dictionary, health information in Spanish, extensive information on prescription and nonprescription drugs, health information from the media, and links to thousands of clinical trials. MedlinePlus is updated daily and can be bookmarked at the URL: There is no advertising on this site, nor does MedlinePlus endorse any company or product.

MedlinePlus links to health information from the National Institutes of Health and other federal government agencies.

MedlinePlus also links to health information from non-government Web sites. See our disclaimer about external links and our quality guidelines.

The National Library of Medicine is part of the National Institute of Health (NIH), which is part of the Dept of Health and Human Services (HHS):

Another reliable site, certified by Health On the Net Foundation (HON):

(See previous post: HON Code certification)

The WebMD Health Network: Our Public Portals

Our network of public portals for consumers and healthcare professionals includes: (which we sometimes refer to as WebMD Health), our primary public portal for consumers and related mobile-optimized sites and mobile apps;, our primary public portal for physicians and other healthcare professionals and related mobile-optimized sites and mobile apps; and other sites through which we provide our branded health and wellness content, tools and services.

WebMD Consumer Network is the leading destination for health information for consumers. WebMD’s online offerings include news articles and features, special reports, interactive guides, originally produced videos, self-assessment questionnaires, expert-led Q&As, community forums and reference resources.

WebMD’s programming caters to all health-related interests, ranging from disease and condition information to healthy lifestyle-related content.

WebMD Professional Network is the leading source of clinical news, medical information and point-of-care tools for physicians, nurse practitioners and other healthcare professionals.

Medscape’s original content includes daily medical news, conference coverage and expert commentary and columns by authors from widely respected clinical and academic institutions.

Medscape also provides access to full-text journal articles, reference materials and other medical content, such as a drug reference database and drug interaction checker; clinical reference, treatment and procedure guides; physician, pharmacy and hospital directories; image collections; and quizzes and case challenges.

The WebMD Health Network websites:

WebMD sites are certified by Health On the Net Foundation:

The Health On the Net Foundation (HON) promotes and guides the deployment of useful and reliable online health information, and its appropriate and efficient use. is another certified site.



One thought on “Reliable medical/health information online

  1. Richard A. Lawhern, Ph.D.

    Add one more: Health on the Net (HON) is a searchable master directory to health and medicine sites all over the world. To be listed with HON, a site must complete a rigorous questionaire on its practices and the sources of its information. When you see the HON icon on a website, you can believe that the information owners have “gone the extra mile” to qualify their content and minimize the impact of advertising or financial self interest on its accuracy.

    Liked by 1 person


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