New drug Rivaroxaban offers hope for heart patients
17 November 2010 Last updated at 07:42 GMT
It is hoped that hundreds of thousands of heart patients could benefit from a new type of blood thinning drug.
Rivaroxaban can be used to help people who have a fast and erratic heartbeat cut their risk of stroke, and has fewer side effects than the drug currently used, Warfarin.
BBC Breakfast spoke to Dr Rosemary Leonard to find out more.