Achoo - 
AllerDays - Allergy resources.

AMA -American Medical Association. 

The Body - HIV/ AIDS information and resources.

Cancer News - Cancer LINKS and news
CliniWeb -

CSPI -Center for Science in the Public Interest. Nutrition info.

Derwent -Search drug/ biotech abstracts and world patents.
Doctor's Guide to the Internet -

Evaluated Medline -Medline access, medical annotations and links.
Guideline.Gov -Detailed treatment info 
HAI -Health Action International, third world, consumer advocate
HealthAtoZ -

Health Finder -Consumer health news, nutrition and disease info.

Healthgate's Medline+ -Medline access plus advanced searching.
Herpes -Free info.
HON -Health On The Net Foundation
Impotence -Free info

Kids Doctor - Children's health information.
Mayo Clinic -Health info from the famous Minnesota clinic.
Medical World Search -

Medicine Net - State of the art medical info, news, diseasearch  engines and terms.

Medline Plus -Gov site, excellent source of disease info.
MedMatrix -

Medscape -Medline access, numerous medical articles. 

Medseek - Directory of hospitals and physicians.
Medsite -
MedWeb -From Emory University.

MerckMedco -Drug library. Drug side effects, interactions, etc..
MSF -World's largest independent medical relief organization.
National Health Council -Helpful disease and treatment information, and links to non-profit health organizations.

National Library of Medicine -One of the biggest resources in the field.

NEJM -New England Journal of Medicine Online.

NOAH - NY Online Access to Health, bi-lingual website.

Nutrition Navigator - Tufts U. resource, ranks nutrition websites.

OBC -Online Birth Center. Midwifery, pregnancy, breastfeeding, etc..
OB/GYN -
OncoLink -Simple, popular site. Sponsor:U Penn Cancer Center. 
Online Pharmacy -Buy popular pharmaceuticals online

Pasteur Institute -Search page.

PharmInfo - Pharmaceutical Information Network.
Phentermine Pharmacy -
Physicians Online -
RXList -Drug Interaction SE.
Shingles -Free info
WebMD -

Yahoo -Health section. Tons of medical, health and physician subjects.