The Cochrane Library is a collection of three databases to help you find high quality evidence:
A regularly updated database of systematic reviews carried out to a gold-standard process.
A useful source of randomised and quasi-randomised controlled trials. Full-text articles are not available through the Cochrane Library, however you may be able to access trials via your university library subscriptions. CENTRAL is updated on a monthly basis.
A useful place to access evidence from Cochrane reviews. They have been designed to assist in clinical decision making. They include a clinical question, an answer and relevant outcome data designed to assist in healthcare decision making.
You can access the Cochrane Library using the link below.