If the drug works it will be made available. Whether it will be affordable to the average American family or another case of corporate greed run amok, as with the $600 Epipens, is another matter.
Bayer is donating it.
Epinephrine can be given by other means and epinephrine isn’t itself a patented drug. A small amount can be drawn up manually with the proper needle/syringe to a mark specified and injected, all at a price point many hundreds of dollars less. The epipens just make it convenient and everything is preset.
People could be taught to do it manually, but mistakes can be made with the doses so they would have to be taught. Still, people do insulins all the time so why not epinephrine? Indeed certain concentrations could be given via insulin syringes as the drug is given subcutaneously for anaphylaxis.
Other companies could get FDA permission to sell a syringe/needle epinephrine vial combination and then undercut the EpiPen maker’s price points and charge 15.00 to 40 dollars only. It might force the EpiPen makers to back off on their exorbitant price increases.