Horse first aid kit for moving?

Ok so today I am moving my horse to a new barn, she is going from a pasture with one other horse in it to a pasture with 5 other horses in it and I know she'll get beat up at first. So I was wondering what sort of first aid stuff should I get to help with her injuries? I currently am getting Wonder Dust or Tea Tree Oil but I don't know past that. My friend said to get Iodine, and I also considered the bandage wrap stuff thanks for anything you can give me!