The ideal reference for anyone wanting straightforward facts about the effects of vitamin k and protein on the drug warfarin this book contains tables listing the vitamin k and protein content of common foods and ingredients and also provides sample recipes and diet suggestions. Buy warfarin and the effects of vitamin k and protein by atkin cath isbn 9780993349911 from amazons book store everyday low prices and free delivery on eligible orders. Warfarin and the effects of vitamin k and protein atkin cath amazoncomau books skip to main contentcomau hello sign in account lists account returns orders try prime cart books go search hello select your address . If you suddenly increase your intake of vitamin k intake in your diet it can have an unintended consequence it can actually decrease the effect of warfarin says cardiologist leslie cho md this is because vitamin k is an essential part of the chemical process for forming blood clots in your body she says