With regard to first aid kits, you should take aspirin and nitro glycerin. Even though you may not have heart disease its a proven fact that a good percentage of the people who die each year from a heart attack do not have heart disease but rather die from a heart attack caused by a blood clot that came from somewhere else in the body. Aspirin will thin your blood and possibly help with the clot, and Nitro will help with the pain while you are making your way out, if you are still alive.