I think that the key to the label is in the statement "Lable has been added". Doesn't state that it has the Original label. I would expect the original label on a 1840 bottle to show a lot more wear and discoloration.
The label says something about colds. I'm not too sure the word "colds" was used much back then. I believe the common words of the day were Catarrah or Consumption or Chillblains. Those labels look like they were just printed last week.