Which antibiotic is listed as part of the abscess treatment plan?

• A. Clavamox
• B. Amoxicillin
• C. Cephalexin
• D. Metronidazole

Answer: (A)

The main idea is choosing an antibiotic that covers the mixed bacteria typically found in an abscess, including anaerobes and beta-lactamase–producing organisms. Clavamox (amoxicillin–clavulanate) fits best because the clavulanic acid blocks beta-lactamases, expanding amoxicillin’s activity to include anaerobes and other beta-lactamase–producing bacteria commonly involved in abscess infections. This broad coverage is more appropriate for an abscess than amoxicillin alone, which can be inactivated by beta-lactamases, or cephalexin, which mainly targets aerobes and has limited anaerobic activity. Metronidazole focuses on anaerobes but misses many aerobes that also need to be treated in an abscess. So, the combination in Clavamox provides the most comprehensive coverage for typical abscess pathogens.