The nurse is preparing to discharge a 60-year-old woman on warfarin (Coumadin) after mitral valve replacement. Which dietary restriction should the nurse advise the client to make?

  • avoid green tea
  • avoid cauliflower
  • avoid green beans
  • avoid asparagus
Number 1 is correct.
Foods high in vitamin K, including green tea, will lessen warfarin’s effectiveness and should be avoided. The vegetables listed are not contraindicated when taking warfarin (Coumadin).