Also - reusing them is nice if you can, but its usually "one of 20" that can be reused.

Do you still have a lot of old canisters you are not using anymore? Is it because the meds are discontinued? Would you mind sending me a list of the canisters and their NDC#s? Maybe we could trade or something

I can put together a list. Sorry this took so long, I have not been back to this page in some time.