A patient presents the following prescription:Amoxicillin 250 mg/5 mL1 tsp tid x 10 daysHow much...

To calculate how muchamoxicillin suspensionwill be used in the first5 days, we follow these steps:

Amoxicillin concentration:250 mg per5 mL

Dosage:1 tsp (5 mL) three times daily (tid)

Duration:First5 days

Step 1: Identify Given InformationStep 2: Calculate Total Daily Volume5 mL×3=15 mL per day5 \text{ mL} \times 3 = 15 \text{ mL per day}5 mL×3=15 mL per day

Step 3: Multiply by 5 Days15 mL/day×5 days=75 mL15 \text{ mL/day} \times 5 \text{ days} = 75 \text{ mL}15 mL/day×5 days=75 mL

Thus, the patient will use75 mLof medication in the first5 days.

A. 25 mL→ Incorrect; this would be correct if taken onlyonce dailyinstead ofthree times daily.

B. 50 mL→ Incorrect; this is the correct amount for3.3 days, not 5 days.

D. 150 mL→ Incorrect; this is thefull 10-day course, not just the first 5 days.

Other Answer Choices Explained:References:

PTCB PTCE Exam Content Outline (Pharmaceutical Calculations – Dosage & Volume Calculations)

USP <795> Nonsterile Compounding Guidelines

Lexicomp Drug Monograph for Amoxicillin Suspension