1. What is Days Supply Calculation?

Days Supply (DS) calculation determines how long a medication supply will last based on the total quantity and daily dosage. It's essential for medication management and prescription refill planning.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( DS \) — Days Supply (days)
• \( TQ \) — Total Quantity (units)
• \( DD \) — Daily Dose (units/day)

Explanation: The calculation divides the total quantity of medication by the daily dosage to determine how many days the supply will last.

3. Importance of Days Supply Calculation

Details: Accurate days supply calculation is crucial for proper medication adherence, preventing medication shortages, and ensuring timely prescription refills.

4. Using the Calculator

Tips: Enter total quantity in units and daily dose in units per day. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for the calculation?
A: Use consistent units for both total quantity and daily dose (e.g., pills, mg, mL, etc.).

Q2: How do I handle medications taken multiple times per day?
A: Calculate the total daily dose by multiplying the dose per administration by the number of administrations per day.

Q3: What if the medication is taken as needed (PRN)?
A: For PRN medications, use the maximum expected daily usage or average historical usage for calculation.

Q4: How accurate is this calculation?
A: The calculation provides a theoretical estimate. Actual usage may vary based on patient adherence and changing medical needs.

Q5: Can this be used for liquid medications?
A: Yes, as long as consistent units are used (e.g., mL for both total quantity and daily dose).