-B12, omega 3, throw in a multi it won't kill you
-probiotics: all I seem to come upon lately are articles on how the bacteria that live in our gut are responsible for all kinds of aspects of health and on a long fast some of the bacteria will die because they have nothing to eat :)
-variety: you've had zero nutrients in a long time, so you want to eat all kinds of druit and veg.
-iron supplements if you tend to get anemic or be low on iron.