Nutrition: Essential

The premier database covering medicine, nursing, dentistry, veterinary medicine, the preclinical sciences, health administration, and the health care system. Produced by the U.S. National Library of Medicine.
Medline ALL incorporates both the MEDLINE and PREMEDLINE databases. PREMEDLINE is the in-process database for Medline with new references are added daily. It provides basic information and abstracts before a record is indexed (ie. given subject headings) and added to MEDLINE.

A major pharmacological, biomedical and drug information database - the European equivalent of Medline.

Journal database for nursing and allied health, biomedicine, consumer health, health sciences librarianship, behavioral sciences, management, and education

This mutifile database allows you to search simultaneously the seven Evidence Based Medicine Reviews databases: Cochrane Database of Systematic Reviews;  ACP Journal Club;  Database of Abstracts of Reviews of Effects (DARE);  Cochrane Central Register of Controlled Trials (CCTR),   NHS Economic Evaluation Database (CLEED),   Health Technology Assessment (CLHTA),   Cochrane Methodology Register (CLMCR)

Scopus is a large multidisciplinary database covering published material in the humanities and sciences. It also provides citation analysis of authors and subject areas. Also includes access to Scival via expanded top menu (Elsevier personal registration required).
For more information on text & data mining