Discuss Vitamin K and Vitamin E in blood clotting.

Re: counseling about vitamin E foods as well. The mechanism that vitamin E interacts with vitamin K activity is not known (1). In some, but not all, there is an increase in bleeding risks (1) . If you are on warfarin, a recommendation I found says that taking more than 1000 IU a day of vitamin E can increase risk of bleeding, and that 800 IUs may be safe for those on warfarin (2). 

Sources:

1/ Traber, M.G., 2008. Vitamin E and K interactions - a 50-year-old problem: Nutrition Reviews©, Vol. 66, No. 11. Nutrition Reviews 66, 624–629. https://doi.org/10.1111/j.1753-4887.2008.00123.x (Links to an external site.)Links to an external site.

2/ NIH. Important information to know when you are taking: Warfarin (Coumadin) and Vitamin K. 

https://www.cc.nih.gov/ccc/patient_education/drug_nutrient/coumadin1.pdf