We used to do it this we, but changed last year. We put a note dosage strength sticker on package and enter it on the mar as dose = half a tablet. This cuts down on us having to stock a ton of UD half tabs in our Omnicells.
Mistakes are a concern but how is it really any different than a nurse having to be trusted to waste 1mg of 2mg dilauded or lorazepam IV dose to give a patient?