Ordered: Synthroid 0.25 mg po Available: Synthroid 125 mcg tablets
How many tablets should be given?
The Correct Answer and Explanation is:
To determine the number of Synthroid tablets to be given, you need to convert the ordered dosage into the unit of the available tablets and then calculate the number of tablets required. Here’s the step-by-step explanation:
1. Convert the ordered dosage from milligrams to micrograms:
The order is for Synthroid 0.25 mg. Since 1 mg equals 1000 mcg (micrograms), you can convert 0.25 mg to micrograms as follows:0.25 mg×1000 mcg/mg=250 mcg0.25 \text{ mg} \times 1000 \text{ mcg/mg} = 250 \text{ mcg}0.25 mg×1000 mcg/mg=250 mcg
Therefore, the ordered dosage is 250 mcg.
2. Determine the dosage per tablet:
The available Synthroid tablets are labeled as 125 mcg each. This means each tablet contains 125 mcg of Synthroid.
3. Calculate the number of tablets required:
To find out how many 125 mcg tablets are needed to meet the ordered 250 mcg dosage, use the following formula:Number of tablets=Ordered dosageDosage per tablet\text{Number of tablets} = \frac{\text{Ordered dosage}}{\text{Dosage per tablet}}Number of tablets=Dosage per tabletOrdered dosage
Substitute the known values:Number of tablets=250 mcg125 mcg/tablet=2\text{Number of tablets} = \frac{250 \text{ mcg}}{125 \text{ mcg/tablet}} = 2Number of tablets=125 mcg/tablet250 mcg=2
So, 2 tablets of Synthroid 125 mcg each are needed to provide the ordered dosage of 0.25 mg.
Summary:
- The ordered dosage is 0.25 mg, which converts to 250 mcg.
- The available tablet strength is 125 mcg.
- To deliver a total of 250 mcg, 2 tablets are required (250 mcg ÷ 125 mcg/tablet = 2 tablets).
Thus, the correct number of tablets to administer is 2.