Medical Web Sites:

WebMD
Health A to Z
Combined Health Information Database
CDC Health Topics A to Z
DrKoop
The Merck Manual
Medicine Online
HealthGate
MayoClinic.com
HealthAnswers.com
National Institute of Health
MedWebPlus
Virtual Hospital
Carle HealthGate Conditions & Concerns
eMedicine
Family Practice Notebook
Discovery Health
AnswerMed.com
US-MD.com Health & Information
CNN Health
MedlinePlus
HealthFinder
HardinMD
Medem Medical Library
National Cancer Institute
FamilyDoctor.org
HIV InSite
KidsHealth.org
New York Online Access to Health
Revolution Health

Medical Dictionaries:

Online Medical Dictionary
Medic8 Online Dictionary
Glossary of Vision Terms
Cancer Glossary
Mental Health Terms

Drug Reference:

HealthTouch - Medication Guide
Safemedication.com
RxList.com
MSN Medication Library

Medical Journals:

New England Journal of Medicine
Free Medical Journals
JAMA - Journal of the American Medical Association
MedlinePlus - News By Day