You just do not carry a first aid for yourself...unfortunately. You carry it for everyone around you.
I have used my more for others than myself from simple items; such as, moleskin and Compeed to various OTC drugs.
You have to be able to stop bleeding and this means some combination of roll gauze, pad and some highly absorbent pad...like a feminine napkin and a way to slow down an allergic reason...Benydryl.
This is the strength of my first aid kit.