is the (most effective) painkillers, stimulants and sedatives that you can get beforehand. If you have to bugout, you will need to be at the top of your game, and that means getting enough rest, staying alert when you need to be, and carrying on despite pain. The next 3 most important ozs are the antibacterial fungal cream, antibiotics, etc in your med kit. Most problems with the cold, heat, animals or humans you can just avoid or drastically reduce, but hiding/running/fighting don't do much for your immune system! 
In fact, they drastically reduce the efficacy of your body, in almost every way. All survivalists should get all the vaccinations available, and keep them up to date.
In fact, they drastically reduce the efficacy of your body, in almost every way. All survivalists should get all the vaccinations available, and keep them up to date.
