Sweet Woodruff, the herb that is used to flavor Maywine, contains coumarins, which are the natural version of Coumadin/Warfarin. However, as I am not a medical or health care practitioner, I wouldn’t begin to presume to tell you how to use it or even if it is safe.
Vitamin K helps the body with clotting. Some very good-for-you foods, such as kale, romaine lettuce, liver, green onions, and olive and canola oils, are high in vitamin K. When my husband was on Coumadin, we had to really watch how much of these foods he ate, because they affected the anti-coagulant effects of the Coumadin. Perhaps limiting the amount of Vitamin K you eat would be a step toward not needing as much of the anti-coagulant medication?
Ginger had to be limited too, because it made his Coumadin work too well. Now that he’s off the Coumadin, we try to include ginger, especially with meals that are high in Vitamin K-rich foods. (Sushi – with its high-K seaweed, is especially nice with the pickled ginger, for example.) Again, I am not a doctor and you will surely want to consult someone who knows more about these things than I do.