Hi Customer (name blocked for privacy).
This question is more complicated.
a) 1 tsp = 1 teaspoonful = 5 ml
2 tsp = 10 ml = 10 ml x 2 mg/ 5 ml = 4 mg
Thus,
The answer is 4 mg proventil per dose ( 2tsp).
b) 1 pound = 0.45 kg
41 pounds = 0.45 x 41 = 18.6 kg
a safe starting dose is 0.1mg/kg
For the child, the safe dose is 18.6 kg x 0.1 mg/ kg = 1.86 mg
From the answer of question a, we know the child gets 4 mg tid (3 times a day), which is higher than 1.86 mg 3 times a day. Thus the answer is that the prescribed dosage is not safe.
Shirley
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