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Understanding how to calculate the days supply of medication is a fundamental skill for pharmacy technicians and students. This practice worksheet provides a step-by-step approach to mastering this calculation, complete with solutions to reinforce learning.
What Is Days Supply?
Days supply refers to the number of days a prescription will last based on the prescribed dosage and quantity dispensed. It helps pharmacists and healthcare providers manage medication inventory and ensure patients receive the correct amount of medication over time.
Key Components Needed for Calculation
- Quantity Dispensed: Total units (pills, capsules, etc.) provided.
- Dosage: How many units are taken per dose.
- Frequency: How many times the medication is taken per day.
Calculation Formula
The basic formula for days supply is:
Days Supply = Quantity Dispensed / (Dosage per Intake × Frequency per Day)
Practice Worksheet with Solutions
Calculate the days supply for each scenario below. Use the formula provided and check your answers with the solutions.
Scenario 1
Quantity Dispensed: 60 tablets
Dosage: 1 tablet
Frequency: 2 times per day
Solution:
Days Supply = 60 / (1 × 2) = 60 / 2 = 30 days
Scenario 2
Quantity Dispensed: 90 capsules
Dosage: 2 capsules
Frequency: 3 times per day
Solution:
Days Supply = 90 / (2 × 3) = 90 / 6 = 15 days
Scenario 3
Quantity Dispensed: 120 ml
Dosage: 10 ml
Frequency: 2 times per day
Solution:
Days Supply = 120 / (10 × 2) = 120 / 20 = 6 days
Tips for Accurate Calculation
- Always confirm the units of measurement.
- Double-check the dosage and frequency.
- Ensure the quantity dispensed matches the units used in calculation.
- Use calculator tools for complex calculations to avoid errors.
Practicing these calculations regularly will improve accuracy and confidence in pharmacy operations. Review different scenarios to strengthen your understanding of days supply calculations.