Ok—makes sense. Much appreciated.I take both 100mcg K1 and 45mcg k2 daily and I’ve used the k1 in the past as a bit of an experiment to lower my inr when its been high. 1000mcg dropped it 1.0 inr point but it took 3 days to fully drop and then head up again.
Aside from the usual inr changes and dose adjustments pretty consistantly my daily dose is 9mg daily and has been for several years even prior the vit k.
From another site this explains the vit k supplementation well- “Many people taking Coumadin use the Low Dose Vitamin K Technique, which involves taking low dose Vitamin K supplements (always consult with your doctor before changing your diet or taking supplements!). Here's how it works. For example, on Monday you take your Vitamin K supplement of 100 mcg and eat 50mcg of Vitamin K. That is a total of 150mcg of Vitamin K on Monday. On Tuesday, you take your Vitamin K supplement of 100mcg and eat 100mcg of Vitamin K. That is a total of 200mcg of Vitamin K on Tuesday. From Monday to Tuesday, your Vitamin K total went up by 33%. Now, let's say you didn't take a Vitamin K supplement at all, but still ate 50mcg on Monday, and 100 mcg on Tuesday, then your Vitamin K total would have gone up by 100%! By taking a daily low dose Vitamin K supplement your total Vitamin K changes less day-to-day. Hence, your Warfarin dosages will change less often and your INR will be more consistent."