Pharmacology · single question
Which species does clindamycin NOT treat?
Show answer and explanation
Correct answer: A. Pseudomonas aeruginosa
- A. Correct. Clindamycin has no reliable activity against Pseudomonas aeruginosa, a gram-negative organism outside its typical spectrum.
- B. Clindamycin is effective against many gram-positive streptococci.
- C. Clindamycin has excellent activity against anaerobes, making it a first-line choice for many dental/oral infections.
- D. Clindamycin covers many staphylococcal infections (non-resistant strains).
Note: Carbenicillin (an anti-pseudomonal penicillin), unlike clindamycin, DOES treat Pseudomonas aeruginosa.