Pharmacology After treatment of pneumonia, a child developed pseudomembranous colitis. Which of the following drug frequently causes pseudomembranous colitis? A Clindamycin B Gararnycin C Erythromycin D Vancomycin 💡 Explanation After treatment of pneumonia, a child developed pseudomembranous colitis. Which of the following drug frequently causes pseudomembranous colitis? ✓ Correct Answer: A. Clindamycin