DHA Pharmacist Exam Practice Questions - DHA Pharmacist Licensing Assessment (CBT Via Prometric) Exam

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A patient on warfarin starts a 7-day course of an antibiotic and the INR rises sharply to 6.5 with no bleeding. Which antibiotic most likely caused this interaction?

Cefalexin Trimethoprim-sulfamethoxazole Nitrofurantoin Azithromycin

Correct Answer:

Trimethoprim-sulfamethoxazole

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