What is the treatment for coumadin (warfarin) overdose?

Vitamin K: Coumadin (warfarin) works against vitamin k to make your blood clot less easily. Taking vitamin k reverses the effect of the coumadin (warfarin). That is one of the reasons why you have to be careful eating dark green leafy vegetables, like spinach, when you take coumadin (warfarin). Spinach, kale, etc., all contain vitamin k and reduce the effect of coumadin (warfarin).

Plasma, vitamin K: Vitamin k can be used if there is a high inr, but no major bleeding. If there is concern for bleeding, plasma can be given to replenish the clotting factors that Coumadin (warfarin) inhibits.