Strange units

This means that you will naturally work out in one unit but the answer is in a different one. A common example for doses is when the final units are containers e.g. bottles.

A patient needs to take Flucloxacillin 250 mg/5 mL as at dose of 10 mL qds. How many bottles will you need to dispense for a 5-day course of treatment?

The total quantity is 200 mL and you should know from practice that the bottles are 100 mL.

In principle, it does not matter what units you are using as long as you are consistent. Doses are normally in mg or mL, but big molecules (such as insulin, some other hormones) are in units.