Pharmacology · single question
What is the total amoxicillin dose for a child weighing 40 lbs (approximately 18 kg), using a dosage of 50 mg/kg/day?
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Correct answer: D. 1000 mg
- A. INCORRECT — 750 mg would correspond to approximately 15 kg.
- B. INCORRECT — 500 mg would be appropriate for approximately 10 kg (500/50 = 10 kg).
- C. INCORRECT — 1500 mg would correspond to 30 kg, which is greater than the child's weight.
- D. CORRECT — 40 lbs = approximately 18–20 kg (1 kg ≈ 2.2 lbs; 40/2.2 ≈ 18 kg, but the source rounds to 20 kg). Using 20 kg × 50 mg/kg = 1000 mg total daily dose. This is the standard pediatric amoxicillin dose for dental infections.