The volume of penicillin V potassium oral solution the patient must receive is 12.5ml.
To calculate the amount of doses to be received by the patient is formulated as, D/H × Q = x
where D = ordered dose amount
H = amount on hand
Q = Quantity
x = Desired amount of dose
It is useful in checking the accuracy of the other calculation methods as mentioned above, thus acting as a double or triple check.
The values of doses given are, D = 500000u , H= 200000u, Q= 5 ml
∴ x = 500000/200000 × 5
x = 12.5ml
Hence the amount of dose to be received by the patient is 12.5 ml
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