Pharmacology · single question
A 25 kg child with no penicillin allergy needs antibiotic prophylaxis before a dental procedure (AHA regimen, 50 mg/kg amoxicillin). What is the correct dose?
Show answer and explanation
Correct answer: C. 1250 mg
- A. 500 mg under-doses a 25 kg child.
- B. 1000 mg corresponds to a 20 kg child, not 25 kg.
- C. Correct. 50 mg/kg × 25 kg = 1250 mg (single dose 30-60 minutes before, maximum 2 g).
- D. 2000 mg is the adult dose / the pediatric maximum cap, not the calculated dose for 25 kg.
Note: The source keyed 1000 mg; the correct 50 mg/kg calculation for 25 kg is 1250 mg.