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The adult dosage of diphenhydramine, an antihistamine, is 50.0 mg. A 24 lb child should only receive 20.0% of the adult dose.

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Answer #1

The dose for the child is calculated:

dose = 50 mg * (20 mg children / 100 mg adults) = 10 mg

The mLs are calculated:

mL = 10 mg * (5 mL / 12.5 mg) = 4 mL

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