Really, I would take water, more clothing than you expect to need, andcommon sense.
If you are really out there invest in a SPOT locater. Carry a few extra water treatment tablets. If you need to drink untreated water, just realize you will probably get giardia
But on the other things I would say:
These absolutely do not work for anything except high profit margins for retailers. Also, if you suck the poison out you will likely get just as sick as the other person, now who is evac'ing both of you?
Water filter:
unless you work very very hard at keeping the ends from cross contaminating these filters are useless. Most people who get Giardia were using filtration systems. Also they can clog without warning. Use chem tabs, preferably chlorine b/c your body has likely already accommodated to it. Iodine tabs used over long periods of time damage your stomach. Ask a Park ranger from the 70's. (not 5 days a week for a year). Chem tabs are also much lighter
SAM splints are what you want to carry if you are really worried about some sort of sprain/break. It will work as well as anything you can hobble together in the field and packs well.
1)
Anti-biotic ointment (consider Staph-strength)-polysporin is fine. All the really bad germs are in hospitals, not nature.
2)
Band-aid strips and pads of various sizes.-superglue. seals it and will clot most cuts.
3)individual sanitary wipes to cleans irritations-crotch rot if you have that problems, otherwise unnecessary
4)Alcohol gel (for cleaning hands before treatment)-roflcopter. This isn't a hospital give antibiotics when you return to civilization
5) Deet-based insect repellent-be very careful with anyone who has not used this before some have terrible reactions
6)Tweezers to pull out splinters, etc. forget it
7)Sting-ease for the wasp or hornet sting-screw it
8)
Clear advanced care adhesive pads (to cover scrapes)-screw it
9)
Rolled gauzeshirtsleeve if you really need it
10)
Elastic bandage roll to wrap an arm or leg no need. Splint and hobble if you need to
11)
2-3 bandanas or strips of cloth 3'-6' long rolled up (for splinting)-tear clothes with sticks or take an adjustable splint.
12)
Hydrogen Peroxide or Betadine sollution for washing puncture wounds, cuts or abrasionsTake care of it when you get out. you will probably not be able to keep it clean anyways
13)
Small sissors-Knife only
14)knife
15)waterproof sunscreen (30-50)
16)
aspirin or ibupropen in sealed packs get one aspirin bottle pour it out put a couple aspirin, ibuprofen, peptobismo caplets, and any other medicine you regularly use
17)
Diagramed first aid instructions
either you know it or you don't you probably aren't going to have time to read over this booklet. Some booklets are crap anyways.
18)First Aid basic training-very valuable. Your employer may get a discount for having a first responder on staff and would be willing to pay for training(mine is funding my Wilderness First Responder class next year for the discount)
If I had a dollar for every boyscout I met wearing a 50# pack with machete, saw, and hatchet on a 3 day trip...
-in a survival kit? leaves, grass, rocks, whatever has always worked for me in a pinch.