A physician ordered amoxicillin 500 mg PO. How many milliliters should be given in each dose if the concentration is 125 mg/5mL?

5 mL
10 mL
15 mL
20 mL

20 mL

Rationale: Use this formula: 125 mg / 5 mL = 500 mg / X mL. Therefore, X = 20 mL, which is the amount given in dose with the concentration 125 mg / 5 mL.