What is Pulmonary Embolism
By far the most common form of pulmonary embolism is a thromboembolism, which occurs when a blood clot, generally a venous thrombus, becomes dislodged from its site of formation an...
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Green tea, INR results
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I was interested in drinking green tea, and many of you probably read my previous thread about how green tea doesn't have high levels of vitamin K, compared to how much was in the tea leaves. Despite this, many resources report green tea is high in vitamin K and should be avoided by warfarin users.
Well, over the past month my warfarin dosage has not been changed, and my INR has fluctuated between 2.6 and 2.9 from week to week. This last week there has been no dietary changes except for green tea. I have been drinking 2 cups of green tea per day (with 4 cups on Friday) over the last week. On Monday my INR was tested, and the results? 2.7 I'll be enjoying green tea every day now, and if any of you are green tea lovers like me, you shouldn't be afraid to start drinking it again. Of course the standard disclaimer applies: I'm not your doctor and this isn't medical advice. Posted on 11/03/09, 05:11 pm |
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Overall call regarding green tea and Vitamin K is still being investigated.
Per the National Institute for Health (NIH): "Green tea may contain vitamin K, which when used in large quantities can reduce the blood thinning effects of warfarin (Coumadin®), a phenomenon that has been reported in a human case. Per the University of Maryland Medical Center: "Blood Thinning Medications (Including Aspirin) -- People who take warfarin, a blood thinning medication, should not drink green tea. Since green tea contains vitamin K, it can make warfarin ineffective. Meanwhile, you should not mix green tea and aspirin because they both prevent platelets from clotting. Using the two together may increase your risk of bleeding." My take, just like Cranberry Juice (another product that the jury is out on), as long as you drink in moderation your should be okay and your INR should be adjusted accordingly to keep it stable. I like green tea and occasionally have a cup (or two). Per the University of Maryland Medical Center: " So many things have Vitamin K and despite the old medical theory (stay away from it) patients are now being advised to use in moderation (no bindging). A lot of doctors still follow the old school theory; mostly those not involved in the research of thrombosis and thrombophilia. 
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