What is the route of administration for vancomycin when treating Clostridioides difficile infections?

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Multiple Choice

What is the route of administration for vancomycin when treating Clostridioides difficile infections?

Delivering the antibiotic directly to the colon where C. difficile resides is the key idea. Vancomycin is poorly absorbed from the gastrointestinal tract, so when you take it orally it stays in the gut, achieving high concentrations in the colon to wipe out the infection while minimizing systemic exposure. That makes oral administration the preferred route for CDI. Intravenous vancomycin, in contrast, circulates systemically and does not deliver enough drug to the colon to be effective against C. difficile. Subcutaneous or topical forms don’t reach the colonic lumen at therapeutic levels, so they aren’t appropriate for treating CDI.

Delivering the antibiotic directly to the colon where C. difficile resides is the key idea. Vancomycin is poorly absorbed from the gastrointestinal tract, so when you take it orally it stays in the gut, achieving high concentrations in the colon to wipe out the infection while minimizing systemic exposure. That makes oral administration the preferred route for CDI. Intravenous vancomycin, in contrast, circulates systemically and does not deliver enough drug to the colon to be effective against C. difficile. Subcutaneous or topical forms don’t reach the colonic lumen at therapeutic levels, so they aren’t appropriate for treating CDI.

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