The physician has ordered 500 mg of amoxicillin to be taken three times a day (tid) for 10 days. This means the total amount of amoxicillin needed for the entire prescription is 500 mg × 3 × 10 = 15000 mg.
The oral suspension contains 250 mg of amoxicillin per 5 mL. So, to get 500 mg of amoxicillin, the patient would need to take 10 mL of the suspension. Since the patient needs to take this dose three times a day for 10 days, the total volume of suspension needed is 10 mL × 3 × 10 = 300 mL.
Since each bottle contains 80 mL of suspension, the number of bottles needed to fill this prescription is 300 mL ÷ 80 mL/bottle = 3.75 bottles.
So, 4 bottles of amoxicillin 250 mg/5 mL oral suspension are needed to fill this prescription.