I disagree on stocking an epipen in your FAK. First you need a prescription to get one, and if you don't have an allergy the supervising doc would have to be a little skewed to give one to you. The only folks I know who stock epipens are WFA trained folks with a known standard of medical care, and they would apply in the field as a last resort. If someone has an allergic reaction, it may be their first time (bad luck) or they have a known allergy, and they should have an epipen on their person, and let you know about it. And unless you get to them late, they should be conscious enough to self-administer. Finally, the whole point of epipen is to temporarily stop the histamine reaction (restricting airway, breathing, swallowing), long enough to adminster antihistamines aka benadryl. Having one or several types of benadryl (liquid or > melt on tongue type) may do better than stocking an epipen, only to have the histamine reaction come back in 20-30 minutes after injection. Best - epipen, followed by benadryl. And always, prepare to evac for better medical care as soon as the person can be moved.

I grok the impulse to have an epipen just in case. I don't hike with people with allergies that require them, if they leave their epipen at home. Its the 11th essential for those so inflicted.