If you can get a medical note to say that you need to inject your medication then you're in the clear. Carry on luggage is tough because even diabetics have to show proof of the meds, have it officially labeled, yada yada to even get it on board. But they have health related reasons to do so (ie, insulin shot during flight, or in case their bags get lost.)
Checked luggage is a whole different animal. I brought acctuane and other items in an unmarked med bottle with a dropper overseas in my checked luggage and there was never a prob (though that was international and not domestic).
Off the top of my head (if you really have to bring your shit with you) is somehow find a way to get a note from a doctor stating your need for a injectable substance that doesn't require a script (something thats non prescription I imagine will be easier to convince him with), possibly B-12 or something similar. Maybe even load your stuff in this non-prescription vial when you fly with it.
I've flown through a lot of airports (esp on the east coast) and some are predictably lax and some are always tight as fuck with security. What airports are you going to be continually flying out of? If you don't wanna post it u can PM it.