Pharmacology · single question
A patient who took antibiotics one week ago has GI upset. Most likely explanation?
Show answer and explanation
Correct answer: B. Disruption of normal GI flora
Disruption of normal GI flora is the most common cause of antibiotic-associated GI upset (antibiotic-associated diarrhea).
- A. ❌ Antibiotic resistance is a population-level concern; does not explain individual GI upset.
- B. ✅ CORRECT – Antibiotics disturb the gut microbiome, causing dysbiosis and GI symptoms.
- C. ❌ Hepatotoxicity presents with jaundice and elevated liver enzymes.
- D. ❌ Allergic reactions typically present with rash or urticaria.