A nurse is preparing to administer somatropin 0.24 mg/kg/week subcutaneously to be divided into six daily doses to a school-age child who weighs 66 lb. How many mg should the nurse administer per dose?

(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Choice A rationale:

Fish oil supplements do not have a known interaction with levothyroxine.

Choice B rationale:

Calcium supplements can interfere with the absorption of levothyroxine. They should be taken at least four hours apart from levothyroxine.

Choice C rationale:

While bulk-forming laxatives can interfere with the absorption of some medications, there’s no specific evidence they interfere with levothyroxine.

Choice D rationale:

Oral antihistamines do not have a known interaction with levothyroxine.

Choice A rationale:

Fexofenadine can be taken with or without food, and there are no specific interactions with magnesium hydroxide. However, it’s always important to consult a healthcare provider before combining medications.

Choice B rationale:

While staying hydrated is generally good advice, there’s no specific requirement to drink up to one liter of fluid per day while taking fexofenadine.

Choice C rationale:

Fexofenadine should not be taken with fruit juices such as orange juice because they can decrease the absorption of the medication, making it less effective.

Choice D rationale:

Fexofenadine can cause side effects such as dizziness or drowsiness in some people. Therefore, it’s important to avoid driving or operating heavy machinery until you know how this medication affects you.