A nurse is reinforcing teaching with a client who has unstable angina and a new prescription for clopidogrel. Which of the following instructions should the nurse include in the teaching?

A. Monitor for black, tarry stools.
B. Take with omeprazole if gastrointestinal upset occurs
C. Remain upright for 30min after taking clopidogrel.
D. Take naproxen for musculoskeletal discomfort.