If a prescription reading EES 200 is prescribed with Sig 1 tsp t.i.d. and Dispense 150 ml, how many days will the prescription last?

To determine how many days the prescription will last, it is necessary to analyze the dosage and the total amount prescribed. In this case, the prescription is for EES 200, with a dosing instruction of 1 teaspoon (tsp) taken three times a day (t.i.d.).

First, it's important to establish how much medication is administered daily. Since 1 tsp is equivalent to approximately 5 milliliters (ml), taking this 3 times a day means the total daily dosage is:

1 tsp × 3 doses = 5 ml × 3 = 15 ml per day.

Next, the prescription indicates a total dispense amount of 150 ml. To find out how many days this amount will last, you divide the total amount of medication by the daily dosage:

150 ml ÷ 15 ml/day = 10 days.

This calculation shows that the prescribed amount will last for 10 days at the dosing schedule indicated. Therefore, the correct answer reflects the total duration that the medication can be taken as directed.