something that i have in my kit that you might want to consider,is a little container of salt.
good for:
-brushing teeth
-mouth rinse for cankers and the like
-eye wash saline( half teaspoon salt to 1 cup clean water)
-ingrown toenail fix(make a paste with salt,apply and put
bandage over,stings for a minute but works great)
-taken with water ,mildly diluted,can help relieve effects of heat exhaustion(cramps,headache,faintness,etc..)
-and for food!