Hi Gabe and Welcome to HealingWell! 
I did a little checking and the only smaller epi pen that I've found is the epi pen jr. for children - I imagine that is due to the fact that they take a smaller dosage of the medication.
Perhaps some others here that have heard about something new will come along and let us both know! 
So please check back, Gabe.
Hugs, Teri
"Because he is he and I am I."......E. V. Lucas
"I Hope You Dance".............LeeAnn Womack
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