Health Information about drugs is ubiquitous and is used by patients, clinicians, and policy makers to aid in decisions about drug therapies. For example, patients use drug information to inform them about the reasons for, how to take, and the harms and benefits of their medications. Clinicians require specialized information on the comparative safety and effectiveness of drug therapies in order to make optimal treatment decisions. Policy makers are also in need of accurate drug information on population level benefits and risks. Unfortunately, the quality and usability of drug information is often uncertain and may lead to unintended consequences affecting patient safety and prescribing. This research program will allow the development of a Drug Information Science Research and Training Laboratory which will evaluate the quality and usability of innovative drug information tools. This will benefit Canadians through producing high quality, accessible, and user friendly information tools to help improve knowledge about drug therapies used to treat common conditions such as diabetes, asthma, and arthritis.