Trip Database - Medical search engine with emphasis on evidence based medicine (EBM) and clinical guidelines and queries, including content from Cochrane and Bandolier. Register to benefit from extra features such as CPD, search history, and collaborative tools.

OpenMD.com - Medical and health literature search engine spanning thousands of health organizations and government databases.

Mednar - Medically-focused federated search engine that queries authoritative medical sites in real time.

A search engine that allows you to search scholary / academic information only.

• PubMed - PubMed comprises more than 21 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites. Covers approximately 4000 journals; international in scope.
• PubMed Clinical Queries - Applies filters to a PubMed search so that the results are limited to articles relevant to therapy, diagnosis, etiology, or prognosis. There is a separate filter for systematic reviews.