Question 18

Leafy green vegetables can interact with warfarin sodium because they contain large amounts of vitamin K.

Leafy green vegetables are known to be high in vitamin K, which plays a crucial role in blood clotting. This interaction is significant for patients taking warfarin sodium, as vitamin K can counteract the medication's effects.

A) B6

Vitamin B6 is involved in amino acid metabolism and neurotransmitter synthesis but does not have a direct relationship with blood clotting or warfarin sodium. Therefore, this option is incorrect in the context of the question.

B) B12

Vitamin B12 is essential for red blood cell formation and neurological function. However, it does not influence the anticoagulant effects of warfarin sodium, making this option incorrect as well.

C) C

Vitamin C is known for its antioxidant properties and immune system support. While it is vital for overall health, it does not interact with warfarin sodium in the same critical manner as vitamin K does, rendering this option incorrect.

D) K

Vitamin K is essential for the synthesis of certain proteins required for blood coagulation. Leafy green vegetables are particularly high in vitamin K, which can significantly affect the efficacy of warfarin sodium, making this the correct choice.

Conclusion

Vitamin K is the primary vitamin that interacts with warfarin sodium due to its role in blood clotting. All other options (B6, B12, and C) do not have the same impact on the anticoagulant properties of warfarin, confirming that D is the only accurate answer in this context.