in the last video we learned how to calculate the number of doses now we'll take it a step further and learn how to calculate the quantity to dispense this is crucial for ensuring patients receive the correct amount of medication for their treatment duration to calculate the quantity to dispense we need to know the dose the frequency and the duration of the treatment we'll use the formula quantity to dispense equals dose time frequency time duration let's break it down with an example here's a problem a pharmacist has a medication in a stock bottle that contains a 120 tablets the prescription for a patient is to take the medication twice daily for 10 days how many tablets should the pharmacist dispense for the entire course of treatment to solve this problem follow these Steps step one calculate the number of tablets the patient needs per day number of tablets per day equals number of doses per day times tablets per dose since the patient takes the medication twice daily the number of tablets per day equals two doses per daytimes one tablet per dose which is just equal to two tablets per day step two calculate the total number of tablets needed for the entire course of treatment total number of tablets equals number of tablets per day times number of days hence we have total number of tablets equal two tablets per day time * 10 days which equals 20 tablets so the pharmacist should dispense 20 tablets for the entire course of treatment let's practice another problem together a patient needs to take a medication three times daily for 14 days each dose is 500 MGR and the medication is available in 250 mgram tablets how many tablets should the pharmacist dispense to solve this problem first we need to determine number of tablets per dose as we learned from previous video the number of tablets per dose equals 500 milligram divided 250 mg per tablet which equals two tablets per dose step two calculate the number of tablets the patient needs per day number of tablets per day equals number of doses per day times tablets per dose the patient takes three doses per day so number of tablets per day equals three doses per day day time 2 tablets per dose which equals six tablets per day step three calculate the total number of tablets needed for the entire course of treatment total number of tablets equals number of tablets per day times number of days total number of tablets equals six tablets per day time 14 days which equals 84 tablets so the pharmacist should dispense 84 tablets for the entire course of treatment now it's your turn to try a problem on your own a patient needs to take a medication twice daily for 7 days each dose is 250 mg and the medication is available in 125 millgram tablets how many tablets should the pharmacist dispense pause the video solve the problem and then we'll check the answer together let's see how you did step one calculate the number of t the patient needs per dose number of tablets per dose equals 250 mg ID 125 mg per tablet which equals two tablets per dose step two calculate the number of tablets the patient needs per day number of tablets per day equals number of doses per day times tablets per dose number of tablets per day equals two doses per day time two tablets per dose that equals four tablets per day step three calculate the total number of tablets needed for the entire course of treatment as total number of tablets equals number of tablets per day times number of days we have total number of tablets equal four tablets per daytimes 7 days which equals 28 tablets so the pharmacis should dispense 28 tablets for the entire course of treatment great job you've now learned how to calculate the quantity of a prescription to dispense in the next video will cover how to calculate the quantity of an ingredient