The following databases focus on Nursing and Medical topics, and are the best places to begin searching:

CINAHL Plus with Full Text
(via EBSCOhost)

Citations, abstracts, and full text for publications covering nursing and allied health topics.

Nursing and Health Professions Premier Collection
(via OVID)

About 75 full text journals mostly from Lippincott Williams & Wilkins (LWW).

Cochrane Library
(via Wiley InterScience)

Full text reviews on nursing and medical topics, abstracts of systematic reviews, abstracts of nearly 350,000 controlled trials.

MEDLINE
(via PubMed)

Citations and abstracts in the fields of medicine, nursing, dentistry, veterinary medicine, the health care system, and the preclinical sciences.

PsycINFO
(via EBSCOhost)

Citations and abstracts from nearly 2000 publications in the field of psychology and the psychological aspects of related disciplines.

These general databases cover all topics, including Nursing and Medicine:

ProQuest

Full-text articles, citations and abstracts covering all subjects.

Wilson OmniFile Fulltext

Full-text articles, citations and abstracts covering all subjects.

These two databases have full text newspaper articles:

LexisNexis Academic

Hundreds of regional, national, and international newspapers; business publications, and much more.

ProQuest Newspapers

Nine national newspapers including the Los Angeles Times and Wall Street Journal.

These next databases have nursing- or medical-related articles, but from a variety of disciplinary perspectives:

TOXLINE
(Toxicology Information Online)

Citations to publications on the toxicological effects of drugs and other chemicals.