What is the formula for calculating days supply of a medication?

The formula for calculating the days supply of a medication is based on how frequently the medication is taken and the amount dispensed. The correct answer incorporates both the dosage and the frequency of administration to give an accurate measure of how long the supplied medication will last.

When calculating the days supply, you divide the total quantity dispensed by the total daily dosage. This is achieved by multiplying the dose by the frequency. For example, if a medication is prescribed to be taken twice a day at a specific dose, this frequency must be factored in to determine how many days the entire quantity of medication will last. Thus, using this formula allows for a more precise calculation of how many days the medication will be effective based on the prescribed regimen.

This method contrasts with other options, which either do not consider frequency adequately or mix terms wrongfully, resulting in an incorrect understanding of how long the medication will last for the patient.