But a small serving of the hot tea itself does not. Green and black tea leaves do contain vitamin K before they are steeped in water. footnote 1 Examples of foods that are high in vitamin K (more than 100 mcg per serving)Įxamples of foods that are moderate in vitamin K (25–100 mcg per serving)Įxamples of foods that are low in vitamin K (less than 25 mcg per serving) The following are lists of some foods that are high, moderate, and low in vitamin K. If you already take a product that contains vitamin K, don't stop taking it without talking with your doctor first. And if you want to start eating more of a food that's rich in vitamin K, talk to your doctor about how to add it safely.Īlso check with your doctor or dietitian before you add or change any natural health products. And if you take a multivitamin that contains vitamin K, be sure to take it every day.Ĭheck with your doctor before you make big changes in what you eat, such as starting a diet to lose weight. Just keep it about the same amount each day. For example, if you already eat a lot of leafy green vegetables, that's fine. It's up to you to decide how much vitamin K you choose to eat. If you do, your warfarin dose may need to be adjusted.
That is why, when you take warfarin, it's important that you not suddenly eat a lot more or a lot less vitamin K-rich food than you usually do.
So warfarin and vitamin K work against each other in your body, and it's important to keep them in balance.
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