CVS Pharmacy Technician Certification Practice Test

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What is the correct day’s supply of an inhaler with 200 puffs, if prescribed 2 puffs by mouth every 6 hours as needed?

  1. 20 days supply

  2. 25 days supply

  3. 30 days supply

  4. 35 days supply

The correct answer is: 25 days supply

To determine the correct day’s supply of an inhaler with 200 puffs when prescribed 2 puffs by mouth every 6 hours as needed, it's important to first calculate how many puffs will be used in a day. Since there are 24 hours in a day and the prescription specifies that the inhaler can be used every 6 hours, that means there are a total of 4 times a day (24 hours ÷ 6 hours = 4 doses). Each dose consists of 2 puffs. Therefore, in one day, the total number of puffs used would be calculated as follows: 4 doses/day × 2 puffs/dose = 8 puffs per day. Now, to find out how many days the inhaler will last, you take the total number of puffs available (200 puffs) and divide it by the number of puffs used per day: 200 puffs ÷ 8 puffs/day = 25 days. This calculation shows that the inhaler will last for 25 days based on the prescribed usage, which aligns with the answer provided. The correct day’s supply of the inhaler is therefore 25 days, making it the accurate choice.