A patient on oral anticoagulant therapy is commenced on sulfamethoxazoletrimethoprim, double-strength twice daily. One may expect to see the INR I. Increase II. Decrease III. Remain unchanged

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A patient on oral anticoagulant therapy is commenced on sulfamethoxazoletrimethoprim, double-strength twice daily. One may expect to see the INR I. Increase II. Decrease III. Remain unchanged