The order reads: Lanoxin 0.125 mg PO now. The medication is available in 0.25 mg tablets. How many tablets will be given?
1. 2 tablets
2. 1/2 tablet
3. 1 1/2 tablets
4. 1/4 tablet
2
Drug calculations are required when the drug available is in a larger dose than that ordered. The medication desired is Lanoxin 0.125 mg, and the medication available is 0.25-mg. Divide 0.125 into 0.25 = 0.5 or 1/2 tablet.
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