The use of Tamiflu has been criticised in a number of recent reports, linking the drug to an increased stroke risk, particularly in the older community.
Dr Peter Coleman, who acts as the deputy director of research at the Stroke Association, said that warfarin is used to prevent blood clots in the body, which is one of the best-known causes of stroke.
He added that it was also understood to interact with a number of medications, particularly antibiotics, though this was well documented and that people should not get worried just yet.
Dr Coleman continued: "We are aware that the Medicines and Healthcare products Regulatory Agency has had 12 reports of reactions between Tamiflu and Warfarin and that they are investigating.
"We recommend that stroke survivors follow the advice on swine flu from the NHS and if they have any doubts to consult their GP."
The Stroke Association remains to be the only UK-wide charity solely concerned with combating stroke in citizens of all ages.
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