Enter the total number of days the prescription is needed for into the calculator to determine the number of refills needed. This calculator can also evaluate any of the variables given the others are known.

## 28 Day Prescription Refill Formula

The following formula is used to calculate the number of refills needed for a 28-day prescription.

R = D / 28

Variables:

- R is the number of refills needed D is the total number of days the prescription is needed for

To calculate the number of refills needed for a 28-day prescription, divide the total number of days the prescription is needed for by 28. The result is the number of refills needed. If the result is not a whole number, round up to the nearest whole number as you cannot have a fraction of a refill.

## What is a 28 Day Prescription Refill?

A 28 Day Prescription Refill is a system where a patient’s medication is prescribed to last for 28 days, after which a new prescription is required to continue the medication. This system is designed to ensure that patients take their medication regularly and as prescribed, and it also allows healthcare providers to monitor the patient’s medication usage and make any necessary adjustments to the prescription. It is commonly used for chronic conditions that require ongoing medication.

## How to Calculate 28 Day Prescription Refill?

The following steps outline how to calculate the number of refills needed for a 28 Day Prescription Refill.

- First, determine the total number of days the prescription is needed for (D).
- Next, divide the total number of days by 28 (28 Day Prescription Refill).
- Finally, calculate the number of refills needed (R).
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

Total number of days the prescription is needed for (D) = 84