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Warfarin diet counselling — GPhC CRA MCQ

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HardCardiovascular TherapeuticsWarfarin diet counsellingGPhC CRA

A patient stabilised on warfarin asks whether they should avoid green vegetables because they contain vitamin K. What would you advise the patient?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: C — Keep vitamin K intake consistent and attend INR monitoring as arranged

Warfarin control is affected by marked changes in vitamin K intake, so consistency is more appropriate than avoidance. In this vignette, "Keep vitamin K intake consistent and attend INR monitoring as arranged" is the safest single best answer. The other options are less appropriate because they miss the key clinical risk, conflict with UK medicines guidance, or delay needed review.

Reference: BNF; NICE CKS