Question:easy
All of the following are used for treatment of H. pylori, except?
All of the following are used for treatment of H. pylori, except?
Show Hint
Find the aminoglycoside that is not in any eradication regimen.
Updated On: Jun 24, 2026
- Gentamycin
- Clarithromycin
- Metronidazole
- Amoxicillin
Show Solution
The Correct Option is A
Solution and Explanation
Step 1: Recall the building blocks of H. pylori eradication. A typical course combines an acid suppressant with antibiotics such as amoxicillin, clarithromycin, and metronidazole, sometimes with tetracycline and bismuth in quadruple therapy.
Step 2: Each of clarithromycin, metronidazole, and amoxicillin appears in recognized triple or quadruple regimens, so all three are legitimate treatments.
Step 3: Gentamycin is an aminoglycoside used chiefly for serious gram-negative systemic infections; it does not feature in any validated anti-H. pylori protocol because it is poorly suited to the gastric niche.
Step 4: Since the question seeks the drug not used, gentamycin is the odd one out.
\[\boxed{\text{Gentamycin}}\]
Step 2: Each of clarithromycin, metronidazole, and amoxicillin appears in recognized triple or quadruple regimens, so all three are legitimate treatments.
Step 3: Gentamycin is an aminoglycoside used chiefly for serious gram-negative systemic infections; it does not feature in any validated anti-H. pylori protocol because it is poorly suited to the gastric niche.
Step 4: Since the question seeks the drug not used, gentamycin is the odd one out.
\[\boxed{\text{Gentamycin}}\]
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