One of the big questions is - How far are you from "resupply"? Then you have things like 2x2 and 4x4 dressings and the like. Really, do you need both sizes? Can you get rid of some of the dressing types (say petrolatum dressings) and carry some petrolatum? Do you really need an ace bandage AND a roll of vet wrap (maybe)

A lot of items there are redundant/overlapping (mostly), where with a little bit of thought, you could probably remove 3 items, and replace them with 2 - BUT you'd have less overall, which is why I ask "how long till resupply" - Let's say you NEED "X" which overlaps with Y - can you last long enough with 50% more X, and NO Y