Ds is allergic to food colouring - so allergic that he ends up in hospital.
He is also allergic to artificial sweetners - so allergic that his stomach stops working properly and so the medicine can't do it's thing.
You can get colour free, but only in a sugar free version. You can get made with sugar but only in a coloured version.
So for us suppositories make perfect sense. Also we know if he is really, really ill - because face it you might fake for the sweet meds and a day at home with mum, but not for having something shoved up your bum.
I had suppositories after having my piles banded - now that made no sense to me - take an area that's already tender and shove 2 bigs lumps next to it.