Originally Posted by Bart
b. Prescription and essential non-prescription medicines; again, no size restrictions; and again, commensurate with what is reasonably adequate.
A question here on "reasonably adequate":
Important medicines shouldn't be checked, especially if there's no way to replace them at the destination. As far as I'm concerned, "reasonably adequate" includes enough for the whole trip + some reserve.
For our usual trips to visit her relatives that means packing 1,440ml of liquid. Considering it's packing material (it comes packed in 5ml ampoules) it's about 1/3 of a rollaboard.
Replacement at the destination would be all but impossible.