James Hollender, an iPhone developer in Massachusetts, has released a smartphone app to help warfarin patients monitor their Vitamin K intake.

Warfarin (aka Coumadin_©) thins blood by reducing the liver’s ability to produce blood-clotting proteins. Fluctuations in Vitamin K in the diet can increase or decrease the effect of warfarin, putting patients at risk of stroke or internal bleeding.

The Vitamin K app provides information about foods and how they are rated for Vitamin K content based on preparation and serving sizes. This is provided as a means to assist in deciding which foods to eat if you are using blood thinning medications such as Coumadin or warfarin. Foods are rated from EXTREMELY LOW to EXTREMELY HIGH in Vitamin K.

It is available for iPhone and iPad.