This talk is being held as part of the Practice of Evidence-Based Health Care module which is part of the MSc in Evidence-Based Health Care. Members of the public are welcome to attend. Carl Heneghan is Director of the Centre of Evidence-Based Medicine, a General Practitioner and Senior Tutor of Kellogg College. Carl has been the author and principal investigator on the Cochrane reviews on Tamiflu in adults and children and for 6 years he has worked alongside an international Cochrane group to obtain the missing unpublished evidence. This work has proved controversial in questioning the £500 million spent by the UK stockpiling the drug and has led to parliamentary appearances and substantial news coverage. The talk will detail the journey to obtain the evidence, the new methods including the use of clinical study reports and the effect of the drug once all the evidence became available.