How well warfarin works; Your blood pressure, if you also take a drug to treat high blood pressure; Danshen. Danshen can interact strongly with some heart medicines, such as: Blood thinners. Danshen may raise your risk of bleeding. This can happen if you also take warfarin or other blood thinners, such as clopidogrel (Plavix) or aspirin, with ... More @Wikipedia
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