A nurse is preparing to administer levothyroxine 100 mcg PO to a client who has hypothyroidism.

Available is levothyroxine 50 mcg tablets.

How many tablets should the nurse administer?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Step 1 is to determine the amount of amoxicillin in each mL of the solution. This is done by dividing the total amount of amoxicillin in the solution (250 mg) by the total volume of the solution (5 mL). So, 250 mg ÷ 5 mL = 50 mg/mL. Step 2 is to determine how many mL of the solution is needed to administer 300 mg of amoxicillin.

This is done by dividing the desired dose (300 mg) by the amount of amoxicillin per mL (50 mg/mL). So, 300 mg ÷ 50 mg/mL = 6 mL.

So, the nurse should administer 6 mL of the amoxicillin oral solution. .

Choice A rationale:
An allergic reaction refers to an immune response to a foreign substance. It does not describe the interaction between an antacid and ketoconazole.
Choice B rationale:
Displacement refers to one drug replacing another at the drug-binding site on proteins, altering the distribution of the displaced drug. It does not describe the interaction between an antacid and ketoconazole.
Choice C rationale:
Accumulation refers to the buildup of a drug in the body due to inadequate metabolism or excretion. It does not describe the interaction between an antacid and ketoconazole.
Choice D rationale:
A drug interaction occurs when the effect of one drug is altered by the administration of another drug. Antacids can slow the dissolution and absorption of ketoconazole, which is a type of drug interaction.