Warfarin (“Coumadin”) is an anticoagulant or “blood thinner”, reduces the formation of blood clots by blocking some clo some clotting factors. You should take this medication exactly as your doctor prescribes it, to the letter. Many medications may cause serious problems if taking them with Warfarin. Any medicine that affect blood clotting or increase the risk of stomach bleeding should be avoided, this includes: aspirin, “celebrex”, “advil”, “motrin”, “voltaren”, “cataflam”, “indocid”, “aleve”,”feldene” and the rest of Non-steroidal anti inflammatory medications (NSAIDs). In general, if you take warfarin with this kind of painkillers increase the chance of bleeding. Taking small occasional doses of Acetaminophen (“Tylenol”) is unlikely to affect the INR (warfarin action) also Codeine may be used to control pain in persons taking warfarin(this last one is a controlled substance and you will need prescription from your doctor).
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