For example if you need to administer a quarter of a pill should the Mar read. Give 0.25mg or 0.5mg of pill and should the mar have the Dose of the medication you're getting the quarter from.
Well, aside from everything else, if you are supposed to give 0.5 mg
then no, clearly it cannot say give 0.25 mg
of a tablet, regardless what is "on hand."
This is all very simple when focusing on the units of measurement.
In the past I have seen some orders that are
indeed ambiguous, such as:
"Ativan 0.5 mg (½ tab) po @ hs" (Give half tab of 0.5 mg, or
0.5 mg is
a half a tab?) **
So yes, it is important that the order includes the name of the med in the doseage supplied.
But your original question seems to have arisen from mixing mg
with "portion of tablet."
**By the way, many patient-written med lists brought from home make this error and it is very important to ask them what they mean by that. They take 25 mg of X, and then they also write "½ tab" - - but what they
mean by that is that they know they actually have 50 mg tablets at home and they take 25 mg, and they write in the extra "reminder" for themselves that 25 mg is going to be half a tab.
So their med list looks like this:
X med - 25 mg (½ tab) - am and pm.