Niobe is not pleased about the syringe, but will swallow everything once it's in her mouth.
Thalia objects very strongly indeed to the syringe, and won't swallow. Instead, she drools, and then wipes her mouth off on my pants, or the cage wires, or anything else handy. (If she can't find anything, she'll wipe it off with her paws and then shake her paws to get the nasty horribleness to go away. No grooming here, no sir! Don't want that in the mouth at all.) Yesterday she struggled so hard to get away that she opened up the wound on her side; not very much, but enough to bleed a little.
Clio, who is not supposed to be on any medication at all, thinks this is the best-tasting liquid since White Russians. She'll mug the other rats once they're back in the cage and lick off any remaining traces that may happen to be stuck to their fur.