text: is there a natural, safe sub for warfarin? my husband takes warfarin because he had his aortic valve replaced two years ago with a metal one. he is 33 years old and does not want to be on warfarin all his life. nor does he want to rely on it being available to keep him alive. what else can he do? right now our life revolves around if we have the money to pay for this medicine each month to keep him alive. there has to be a better way????? is there anyone else out there who has a similiar experience and is using something natural to thin thier blood? ginkgo biloba thins your blood. i am not sure that i would substitute it for the warfarin, but that is ine if the properties of ginkgo.( and why its suggested that you dont combine it with coumadin or other blood thinners)