This is just the antidotes with the correct backs for the original LDoP without antidotes, as well as the multi-colored poisons and a rules card.
Note: Due to being two different printings, the back colors will not match exactly. Sleeving the cards is a workaround (your version will not fit in the box with the new cards anyway,) or you can get the version with antidotes! ... [click here for more]