Question

A patient has been ordered to start a therapy of syrup Q. The directions call for: 45mg TID AC et 15mg HS X10D. Syrup Q is dispensed in pre-mixed 6 ounce bottles of 0.3% concentration. How many bottles will be dispensed for this prescription?

Answer 1

The directions of ordered therapy is 45 mg $\times$ 3 times + 15 mg $\times$ 10 days = 1500 mg

6 ounces = 180 ml

1 ml = 1 gm, 180 ml = 180 gms

180gms $\times$ 0.3 = 0.54 gms

0.54 gms = 540 mg (multiply gms with 1000 to convert into mg)

The available dose in 6 ounce bottles is 540 mg.

Required quantity = Required dose $\div$ available dose

                             = 1500 $\div$ 540

                            = 2.77 which can be rounded to 3

The bottles required to dispense for the prescription are 3 bottles for 10 days.