End
1 :

Hint : 🍃 Think of the drug that directly opposes vitamin K in the clotting pathway.

Correct Answers:

  • Warfarin


Rationale :

🔹 Warfarin is a vitamin K antagonist, so it works by inhibiting vitamin K–dependent clotting factors, helping to prevent blood clots.

🔹 A high intake of vitamin K (e.g., green leafy vegetables) can counteract warfarin, reducing its anticoagulant effect.

🔹 When vitamin K intake increases, the INR tends to decrease, which means the blood is “thicker” and more prone to clotting.

🔹 Clients on warfarin are taught to keep their vitamin K intake consistent to maintain a stable INR and avoid clot formation.

🔹 If warfarin’s effect is reduced by excess vitamin K, the client is at higher risk for thromboembolic events like DVT or stroke.

Ibuprofen

🔹 Ibuprofen is an NSAID that primarily affects prostaglandins and platelet function, not vitamin K–dependent clotting factors.

🔹 High vitamin K intake does not significantly change the effectiveness of ibuprofen, so it is not the drug classically altered by dietary vitamin K.

Lisinopril

🔹 Lisinopril is an ACE inhibitor used for hypertension and heart failure, acting on the renin–angiotensin–aldosterone system.

🔹 Its effect is unrelated to vitamin K, so high vitamin K intake does not decrease lisinopril’s effectiveness or cause blood clots.

Acetaminophen

🔹 Acetaminophen is an analgesic/antipyretic acting centrally to reduce pain and fever, not to alter clotting factors.

🔹 Vitamin K intake does not meaningfully affect acetaminophen’s action, so it is not the medication whose effect depends on vitamin K balance


Distractor Analysis :

Rationale for Incorrect Options to be Available Soon

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