In the 5 or so different sets of protocols I've worked under Bs were allowed to "assist" a patient in using their own Epi Pen. They were not allowed to draw up the medication from a vial, or administer it to anyone who did not have an current prescription for an Epi Pen, and have it with them. That is what I was referring to, sorry I wasn't clear.
Technically under those protocols, the EMTB would need to know about Epi and its affects, and about the different Epi pens (peds vs adults vs multi dose etc) but not necessarily about the Epi Paramedics use. Hopefully that makes sense. And I know not just Paramedics use it, I'm just trying to avoid talking about the concentrations.