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A Patient Should Not Take Cimetidine Within 2 Hours of Taking

Question 28

Multiple Choice

A patient should not take cimetidine within 2 hours of taking cobalamin to treat his or her anemia because:

A) cimetidine decreases gastric acid so that cobalamin cannot combine with available gastric intrinsic factor, impairing but not totally inhibiting the absorption of cobalamin.
B) cimetidine stops the production of gastric acid so that cobalamin cannot combine with available gastric intrinsic factor, totally inhibiting the absorption of cobalamin.
C) cimetidine suppresses the bone marrow and interferes with red blood cell maturation so that cobalamin cannot function in these cells.
D) None of these are correct.

Correct Answer: