The other part of the puzzle is what data was
collected. Often when we were setting up expiration dates on industrial
chemicals, we would store for a certain length of time (we liked 2 years), then
determine if it was good. If the stuff was good we would then tell the
factory to put an expiration date 2 years after production. Some things
did go to hell earlier. Those would get a shorter expiration date.
I would expect that Bute if stored dry would be
unchanged for many many years. Other drugs should be much less
stable. I would not be surprised to find that bute was found to be pretty
much unchanged after whatever the standard time for the company was and this was
used as an expiration date.
I can't prove any of this, so for critical drugs I
would discard after expiration. If Bute has lost a bit of potency, it
usually won't matter all that much.
Ed
Ed & Wendy Hauser 2994 Mittower
Road Victor, MT 59875
