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Medical Forum / General / General / December 2006

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Coumadin and green leafy vegetables

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Edgar A Pearlstein - 28 Dec 2006 03:29 GMT
We are told that eating green leafy vegetables affects the INR for
Coumadin users.  Questions:

1.Does it increase or decrease the INR?

2.Does the caution apply only to very green and leafy vegetables, such as
spinach, or is lettuce included?

3.How much of the vegetable must one eat in order to have a significant
effect?

4.How soon after eating does the effect show up? Should one be careful
about eating before an INR test is done, for how long?
Bob - 29 Dec 2006 04:23 GMT
>   We are told that eating green leafy vegetables affects the INR for
>Coumadin users.  Questions:
>
>1.Does it increase or decrease the INR?

The relevant compound is Vitamin K. Vitamin K works in the opposite
direction as coumadin. Vit K promotes coagulation, coumadin inhibits
coagulation.

Looking for info on vitamin K content of various greens may help you.
But I would think your doctor would advise you as to what dietary
restrictions you should observe.

bob

>2.Does the caution apply only to very green and leafy vegetables, such as
>spinach, or is lettuce included?
[quoted text clipped - 4 lines]
>4.How soon after eating does the effect show up? Should one be careful
>about eating before an INR test is done, for how long?
Juhana Harju - 29 Dec 2006 06:38 GMT
::   We are told that eating green leafy vegetables affects the INR for
:: Coumadin users.  Questions:
[quoted text clipped - 10 lines]
:
: bob

It is very unfortunate that patients using bllod thinning medications have
to limit their intake of vitamin K rich foods. Those foods are actually some
of the healthiest foods in a diet. Vitamin K promotes good bone health and
high dietary intake of vitamin K is related to reduced risk of fracturers.
Green leafy vegetables which are high in vitamin K are also nutrient rich
foods high in minerals and lutein, a flavonoid promoting good eye health and
preventing macular degeneration.

:: 2.Does the caution apply only to very green and leafy vegetables,
:: such as spinach, or is lettuce included?
[quoted text clipped - 4 lines]
:: 4.How soon after eating does the effect show up? Should one be
:: careful about eating before an INR test is done, for how long?

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Juhana


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