The physician's order is safe according to the recommended dose, but is well bellow recomended.
Dosage is the act of dosing; is the action of measuring the amount of dose that will be administered, at a certain frequency for a period of time.
That said, the manufacturer's recommendation is 50mg per kilogram, per day. The physician ordered 300mg of erythrom erythromycin tid, the patient weighs 40.9kg, so the recommended dose for him would be 2045mg. To achive this recommendation the patient would need to take six doses a day.
1kg -- 50mg
40,9 -- x
x = 2045mg/day
2045mg/300mg = 6
In this case, we can notice that the physician's order is safe according to the recommended dose, but is well bellow recomended.
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