If a medication is prescribed at 75 mg every 6 hours, how much will be taken in one day?

To determine the total amount of medication taken in one day when prescribed at 75 mg every 6 hours, first, calculate how many doses are taken in a 24-hour period. There are 24 hours in a day, and when dosing occurs every 6 hours, the total number of doses can be found by dividing 24 by 6.

This calculation gives:

24 hours ÷ 6 hours/dose = 4 doses per day.

Next, multiply the number of doses by the amount prescribed per dose:

4 doses × 75 mg/dose = 300 mg.

Therefore, the total medication taken in one day is correctly calculated as 300 mg.

The choice of 450 mg does not align with the calculations since it implies calculating a different number of doses or a different amount per dosage, which does not reflect the information provided in the question.