A Patient Should Not Take Cimetidine Within 2 Hours of Taking

question 6

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.

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Definitions:

Ethylene

A hydrocarbon gas (C2H4) that acts as a plant hormone, regulating a wide range of processes including fruit ripening and leaf senescence.

Jasmonic Acid

A plant hormone that plays a key role in stress responses, growth, and developmental processes, as well as in defense mechanisms against pathogens.

Prostaglandins

A group of lipid compounds that have diverse hormone-like effects in animals, including involvement in inflammation and pain management.

Cryptochrome

A class of flavoproteins that are sensitive to blue light and found in plants and animals, playing a role in the regulation of circadian rhythms.