Bristol Biomedical Image Archive
A collection of about 8500 medical, dental and veterinary images for teaching and learning. Images are generally freely available, subject to the terms and conditions of use specified on the site.
http://www.brisbio.ac.uk/

British National Formulary (BNF)
The twice-yearly source of up-to-date guidance on prescribing, dispensing and administering medicines. Free registration required.
http://bnf.vhn.net/

MedCalc
A comprehensive collection of online clinical calculators. Includes ABG, GFR, Fluids and BMI calculations and interpretations.
http://www.medcalc.com/

4Physicians
A guide to doctors and hospitals and resources for doctors and patients.
http://www.4physicians.com/

MedPix
Database of medical images.
http://rad.usuhs.mil/synapse/index.html

MedConnect
Information services with a clinical and practical focus for physicians and other health care professionals.
http://www.medconnect.com/

Library of the National Medical Society
Links to various journals, online diagnosis, medical textbooks and atlases. Subscription required.
http://www.medical-library.org/

Medicine Online
A guide to health, offering medical news, health guides, discussion groups, disease information, E-exchange using reverse auction technology for cosmetic surgery, dentistry, ophthalmology and podiatry.
http://www.medicineonline.net/

Medics Travel
Lists hospitals, charities, NGOs and recruitment agencies around the world to help doctors, nurses and medical students plan work and electives overseas.
http://www.medicstravel.co.uk/

PreventDisease.com
A patient-oriented portal for up-to-date health information on fitness, lifestyle, nutrition and health tools.
http://PreventDisease.com/

MDconsult
Includes reference books, journal search, practice guidelines, patient education and drug information. Subscription required with free 10-day pass.
http://www.mdconsult.com/

AskDrWalker
Resources and links to medical information. Includes medical databases, medical search engines, diseases and conditions and useful links for health professionals and patients.
http://www.askdrwalker.com/

InteliHealth - Look It Up
Access to InteliHealth's research tools, including a drug resource center, symptom assessment, tests and procedures, physician and hospital locators, health resources and associations.
http://www.intelihealth.com/IH/ihtIH/WSIHW000/23872/23872.html

Best Evidence Topics
Access to evidence-based medicine topics. Includes a searchable database.
http://www.bestbets.org/

Guide to Clinical Preventive Services
The 1996 update report of the U.S. Preventive Services Task Force (USPSTF) at the CPMC website.
http://cpmcnet.columbia.edu/texts/gcps/

Disease Conditions and Information
A reference guide for about 100 disease and health conditions in an alphabetical listing.
http://www.medindia.net/Patients/PatientInfo/Home.asp

i-Medicine
Collection of clinical audit, governance and informatics resources, articles and tools.
http://www.maccnet.co.uk/audit/

Centre for Medical Web Research
A virtual centre for researching medical questions on the internet.
http://www.cmwr.org/

ComplianceFDA - FDA Warning Letters, Regulations, USC Search
Food and Drug Administration (FDA) Warning Letters, Regulations, US Code searchable database. Issued to pharmaceutical, healthcare, medical device companies. Information categorized and cross-referenced.
http://www.complianceFDA.com

Overlake Hospital Medical Center Medical Library
Directory of websites evaluated for their presentation, content and thoroughness.
http://medlib.overlakehospital.org