The problem that I have with the Coumadin cookbook is that they seem to take the tiniest fact and turn it into a an eleventh commandment, "Thou shalt not..."
If you are eatiing a heart healthy diet, you should be consuming such a small amount of these oils that it should not make the slightest difference with your warfarin dose.
If you follow the rule about putting the oil out in the sun, then you must do it with every bottle of oil, for the exact same amount of exposure to the sun otherwise you will be introducing a varying amount of vitamin K into your diet.
Why not eat what you want and adjust the warfarin dose around it - much simpler.
As far as grapefruit juice is concerned it is much more of a laboratory phenomenon than a fact that affects people.
Warfarin comes in two chemically identical forms - look at your hands - the same chemically - but far different when you try to put on a glove. Almost all of the active for of warfarin is the laft handed version. For it to have an effect it has to fit onto a receptor which is like a left handed glove. Right handed and left handed warfarin are metabolized by two different enzymes. Grapefruit juice only works on the right handed form. This is the less active form. So it has almost no effect on the INR.
I will bet you any amount of money that you want that you can go to the National Library of Medicine and look at all of their millions of journals going back the last 50 years and you will be able to count on one hand all of the reports of people who suffered harm from drinking grapefruit juice and taking warfarin.
Those are examples of what I mean by them taking the itsy-bitsy-est piece of data and blowing it up to an equal of the 10 Commandments.
What they print is the truth but... (you decide)
To illustrate the difference between right and left handed warfarin, there was one person who had no left-handed receptors. In order to get a therapeutic dose of warfarin, that person had to take 660 mg of warfarin daily. You read it right 66 of the 10 mg tablets every day. That is how little effect right-handed warfarin has.
