A 70-year-old man presents to the General Practice with a subtherapeutic level of his INR. | Medibuddy
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29th February 2024

A 70-year-old man presents to the General Practice with a subtherapeutic level of his INR.

A 70-year-old man presents to the General Practice with a subtherapeutic level of his INR. He takes 5 mg of warfarin OD oral titrated based on INR, for his prosthetic aortic valve. He had recently been prescribed a prophylactic antibiotic, since he was a close contact of someone who developed meningococcal meningitis.

Which of the following drugs is most likely to interact with Warfarin to cause his symptoms?

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