Its in an office enviroment though, presumably surrounded by adults who can make their own decisions as to what they consume? It has food colouring in it and a fair bit of glucose and caffiene so perhaps not so good for those with intolerances.
Ive never heard any specific warnings about lucozade but would be more concerned if the vending machine had been placed in a school perhaps or if your employer had taken away all other options for refreshment and this was the only fluid available.