# math

How do I calculate the doasage of Amoxicillin suspension 125mg/5ml if the dose ordered is 3/4 tsp Po Bid?

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1. Given
3/4 tsp Po Bid
First convert tsp to ml using
1 tsp = 5 ml.
so 3/4 tsp = (3/4)*5 = 3.75 ml.

So the prescription calls for
3.75 ml. of a suspension 125 mg/5ml

125 mg : 5 ml
X mg : 3.75 ml

By cross multiplication, we get
X=3.75*125/5=93.75 mg (twice a day)

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