This is not an equivalent to a commercial epinephrine auto-injector.
Point 1: The Autoinject 2 used in the instructions is made to inject at a different depth
than the epinephrine injectors (subcutaneous vs intramuscular). This will change the effect of the medication administered.
Point 2: Epinephrine solution cannot be drawn up manually into a syringe and left for use at an indefinite future date.
Nursing team advice recommends discarding manually pre-loaded syringes within 12-24 hours.
And finally, Point 3 (which was a red flag to me): "Doctor" Michael Laufer is not an MD.
His PhD is in mathematics. He says as much on the site where the "Epipencil" instructions are hosted (fourthievesvinegar.org/faq
) and admits it freely on Twitter as well. He does not have the health care experience to advise use of this device.